########################################### Table of Contents ########################################### 1. Conferences 1.1. School on Gravity: from motion to commotion, Copenhagen, Denmark 1.2. Dark Matter and Stars: Multi-Messenger Probes of Dark Matter and Modified Gravity, Southampton, UK 1.3. GW:UK@Nottingham, Nottingham, UK 1.4. The 3rd International Conference on Quantum, Classical, and Relativistic Causality, Grenoble, France 1.5. Tales of Black Holes - International Doctoral Summer School on Advanced Black Hole Physics, Granada, Spain 1.6. Vatican Observatory Lectures on Quantum Gravity 2026, Albano Laziale, Italy 1.7. 28th International Summer School on Global Analysis and Its Applications: Mathematical Foundations of Physical Field Theories, Brasov, Romania 1.8. IWARA 2026, Mexico City, Mexico 2. Jobs 2.1. Postdoctoral Research, Multimessenger Astrophysics, Winston-Salem, NC, USA 2.2. Research fellowships in gravitational physics, Lisbon, Portugal 2.3. Postdoctoral Research Associate Position in Astrophysics, Charlottesville, VA, USA 2.4. Postdoctoral position in gravitational physics, Oxford, MS, USA 2.5. Postdoctoral Research Fellow in Gravitational Wave Observations, Birmingham, UK 2.6. PhD positions in theory, observations, and instrumentation, Prague, Czechia 2.7. Postdoctoral Fellowships in Theoretical Astrophysics, Copenhagen, Denmark 2.8. Postdoc position in quantum gravity, Heidelberg, Germany 2.9. TDLI International PhD positions in Astrophysics, Shanghai, China 2.10. Postdoctoral Position in Gravitational Wave Physics, Tuebingen, Germany 2.11. Postdoc position in geometric analysis/mathematical general relativity, Lulea, Sweden 2.12. Postdoctoral Fellows in Astrophysics, Chennai, India 2.13. Research Associate in Gravitational Wave Astronomy, Cardiff, UK 2.14. Postdoc in neutron star EoS, Coimbra, Portugal 2.15. Postdoctoral Positions in Astrophysics, Tashkent, Uzbekistan 2.16. PhD position in mathematical general relativity, Gothenburg, Sweden 2.17. Faculty position in Gravitational-wave and Multi-messenger Astrophysics, Amsterdam, Netherlands 2.18. PhD fellowships at SISSA, Trieste, Italy 2.19. Postdoctoral Position at the Interface of Gravity and Quantum Information, Melbourne, Australia 3. News 3.1. Gravity Research Foundation, Awards for Essays for 2026 3.2. WOST School 2026 - Exploring Quantum WithOut SpaceTime, Les Houches, France ============================================== 1. Conferences ============================================== 1.1. School on Gravity: from motion to commotion, Copenhagen, Denmark --------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/?p=30372 Starting: 2026-06-22 to 2026-06-26 Location: Copenhagen, Denmark Additional Information: https://the-center-of-gravity.com/events/the-school-on-gravity-from-motion-t... Contact: sog[AT]the-center-of-gravity.com School on Gravity, Niels Bohr Institute, June 2026 Understanding the gravitational interaction is one of the great scientific endeavors of the 21st century. The Nobel Prize-winning discovery of gravitational waves in 2015, and subsequent detections by the LIGO-Virgo-KAGRA Collaboration, have marked a revolutionary step forward in physics and astrophysics by opening an entirely new window for exploring the Universe. Future upgrades to these detectors, along with upcoming facilities such as LISA and the Einstein Telescope, promise even more breakthrough discoveries that the next generation of scientists will need to interpret. The School on Gravity (22-26 June 2026, Copenhagen) will introduce junior scientists-graduate students and advanced undergraduates with a background in general relativity-to a wide range of foundational topics in the exciting new field of gravitational wave physics. Topics will span from the theory of motion, to new challenges introduced by quantum physics, to the astrophysics of black holes and source modeling for gravitational-wave detectors. The school will credit 2.5 ECTS. The program is as follows: Lectures on Black Holes and Neutron Stars (how, when and where they are born, how they spin, how many, when do they merge, how many merge). Lecturer: Lieke van Son (Radboud University) Lectures on Motion (the two body problem in General Relativity). Lecturer: Julio Parra Martinez (IHES) Lectures on Completing Einstein (why does General Relativity need completion, what type of effects should we be on look out for, where would they manifest themselves). Lecturer: Gustavo Turiaci (U. Washington, Seattle) Lectures on Environments (which type of environments, how do they affect strong field gravity, how do we model them, impact on gravitational wave signals). Lecturer: Laura Sberna (Nottingham University) We require submission of a single pdf file containing a two-page CV, up to half a page motivation letter, and a signed support letter from an advisor on letterhead. Deadline: February 01, 2026. The number of seats is limited, so we encourage you to apply as soon as possible. The School on Gravity will take place in the legendary Auditorium A of the Niels Bohr Institute, inviting students and lecturers to challenge current paradigms in gravitational physics in the spirit of the quantum revolution that unfolded in this very room. This is the first of a series of annual school organized by the Center of Gravity (CoG). The members of the Scientific Organizing Committee for the School of Gravity are Vitor Cardoso (Director of CoG), Emil Bjerrum-Bohr, Jose Ezquiaga, Troels Harmark, Niels Obers, Marta Orselli, Alessia Platania, Johan Samsing, Maarten van de Meent, Ziqi Yan. Local Organizing Committee: Vitor Cardoso and Jose Ezquiaga Contact: sog[AT]the-center-of-gravity.com +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1.2. Dark Matter and Stars: Multi-Messenger Probes of Dark Matter and Modified Gravity, Southampton, UK --------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2025/12/03/dark-matter-and-stars-multi-m... Starting: 2026-07-13 to 2026-07-15 Location: Southampton, UK Additional Information: https://indico.cern.ch/event/1596704/overview Contact: icdms26[AT]soton.ac.uk The International Conference "Dark Matter and Stars: Multi-Messenger Probes of Dark Matter and Modified Gravity" aims to bring together scientists working across the different research fields of astrophysics, cosmology, and modified gravity. We want to look at the dark matter problem from different perspectives, considering it to be of particle nature, as well as modification of gravity. This meeting is intended to initiate cross-field discussions of dark matter searches, their current status, and future prospects. CONFERENCE TOPICS - Dark matter in compact stars (neutron stars, white dwarfs, exotic stars) - Multi-messenger and gravitational wave probes of dark matter - Supernovae and dark matter - Stars, Sun-like stars - Exoplanets and brown dwarfs - Cosmology - Modified gravity - Models of dark matter - Direct detection of dark matter INVITED SPEAKERS - Joseph Silk (Johns Hopkins U. / Oxford U. / Paris, Inst. Astrophys.) - Miguel Bezares (Nottingham U.) and others.. We seek to encourage dialogue between different research groups to enhance collaboration and help to improve our understanding of dark matter. The conference is also planned to introduce the dark matter research field to encourage attendance by young scientists including Ph.D. students. The conference venue: School of Mathematical Sciences, University of Southampton, Southampton, United Kingdom Dates: 13-15 July 2026 The registration and abstract submissions are open: https://indico.cern.ch/event/1596704/ We look forward to your participation and contributions to fruitful discussions. Best regards, Organizing Committee: Violetta Sagun (Chair), Nils Andersson, Afonso Robalo Avila, Lidio Lopes, Miquel Miravet-Tenes, Tracy Storey +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1.3. GW:UK@Nottingham, Nottingham, UK --------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/?p=30378 Starting: 2026-01-15 to 2026-01-16 Location: Nottingham, UK Additional Information: https://indico.global/event/16345/ Contact: thomas.sotiriou[AT]nottingham.ac.uk GW:UK@Nottingham is the first meeting of the GW:UK initiative. It will bring together researchers from across the UK involved in gravitational wave science to celebrate 10 years of gravitational wave discoveries (day 1) and to engage in community-building activities (day 2). Due to the nature of this meeting, we will only offer in person participation. Some funding to cover accommodation and travel expenses for UK-based participants is available. There will be a number of slots available for contributed talks, including flash talks. We especially encourage early career researchers to apply for a slot. To be considered for financial support and a contributed or flash talk, please complete your registration by 16 December. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1.4. The 3rd International Conference on Quantum, Classical, and Relativistic Causality, Grenoble, France --------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/?p=30429 Starting: 2026-06-22 to 2026-06-26 Location: Grenoble, France Additional Information: https://causalworlds2026.inria.fr Contact: causalworlds[AT]gmail.com Causalworlds 2026: The 3rd International Conference on Quantum, Classical, and Relativistic Causality Grenoble, France, June 22-26, 2026 https://causalworlds2026.inria.fr Presentation and scope: Understanding causality is foundational to science and has wide-ranging applications, yet there are several distinct notions of causation. Recently, there have been important developments on the role of causality in quantum physics, relativistic physics and their interplay. These have unearthed a plethora of deep and fascinating questions regarding the nature of causation in physical theories, emergence of space-time structure and how relativistic principles can shape the landscape of quantum information processing. At the same time, causal reasoning is central in classical statistics, and has become a crucial tool in machine learning, with applications ranging from big data to healthcare. The interface between classical and quantum causality has also been crucial for identifying when and how quantum theory can surpass classical models in information processing. Causalworlds aims to bring together researchers from different areas of physics, computer science, mathematics and philosophy working on such questions related to causality, both from fundamental and applied perspectives, to provide a venue for cross-pollination of ideas and techniques across these disciplines and consolidate efforts towards a more unified understanding of causation. The scope of the conference includes (but is not limited to): * Quantum and classical causal inference and causal models * The role of causal structure in information processing * Indefinite causality and quantum reference frames * Cyclic causality and time symmetry * Causality in quantum field theory and quantum gravity * Experiments in causality and applications Important Dates: * Paper submission deadline: Feb 20, 2026 (AoE) * Paper notification: Late March, 2026 * Conference: June 22-26, 2026 Submission Guidelines: We invite submissions of papers for talks and/or posters. Submissions for a talk will automatically be considered for a poster if not accepted for a talk. * Talk: Submission will consist of a 3 page (excluding references) extended abstract, together with a link to the full paper (published or preprint) or a draft of the manuscript if not yet publicly available. * Poster: Submission will consist of a short plaintext abstract. Work in progress is welcome. Submissions will be considered via EasyChair: https://easychair.org/conferences?conf=cw2026 Invited Speakers: To be announced shortly. Organising Committee: * Alastair Abbott (Inria) * Cyril Branciard (Institut Neel) * Mehdi Mhalla (LIG) * Kuntal Sengupta (Institut Neel) * V. Vilasini (Inria) PC Chairs: * Alastair Abbott (Inria) * Elie Wolfe (Perimeter Institute) The programme committee will be announced shortly. Causalworlds Steering Committee: * Hler Kristjansson (Universite' de Montreal and Mila) * V. Vilasini (Inria) Previous editions: * Causalworlds 2024 at Perimeter Institute for Theoretical Physics (http://www.causalworlds.ca/) * Causalworlds 2022 in Zuerich (https://causalworlds.ethz.ch/) +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1.5. Tales of Black Holes - International Doctoral Summer School on Advanced Black Hole Physics, Granada, Spain --------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2025/12/14/tales-of-black-holes-internat... Starting: 2026-06-29 to 2026-07-03 Location: Granada, Spain Additional Information: https://talesofblackholes.iaa.csic.es Contact: talesofblackholes[AT]iaa.es Tales of Black Holes - International Doctoral Summer School on Advanced Black Hole Physics, Granada, Spain The second edition of the International Doctoral Summer School on Advanced Black Hole Physics "Tales of Black Holes" will take place in Granada, Spain, from June 29th to July 3rd 2026. This edition of the school will feature the following experts and topics: - Vitor Cardoso (Center of Gravity): Testing general relativity with black holes. - Peter Galison (Harvard University): Black hole imaging through scientific, philosophical and cultural lenses. - Elizabeth Winstanley (University of Sheffield): Quantum field theory on black hole spacetimes. The summer school is intended for international MSc and PhD students to gain a solid understanding of the theory, phenomenology and observations of black holes and acquire a broad perspective of current research tendencies. The school will take place in the historical Carmen de la Victoria, a beautiful complex of gardens and water features facing the famous Alhambra. Participation is limited to 24 students hosted on a full board basis in shared accommodation. The call for applications will run from January 1st, 2026 to February 28th, 2026. More information about the registration procedure and fees can be found on the website of the school. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1.6. Vatican Observatory Lectures on Quantum Gravity 2026, Albano Laziale, Italy --------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/?p=30470 Starting: 2026-06-22 to 2026-06-26 Location: Albano Laziale, Italy Additional Information: https://indico.global/event/16082/ Contact: specolaevents[AT]protonmail.com The quantization of space and time as GR dynamical variables is an unresolved problem. Therefore known quantization methods generate technical problems like perturbative non-renormalizability of the theory. The lectures will explore fundamental approaches, including: - canonical quantum gravity, - the problem of time, - amplitudes and effective field theory in quantum gravity, - covariant quantum gravity. The goal is to confront and contrast these methods, fostering the exchange of ideas necessary to resolve outstanding issues in the field. The interdisciplinary program consists of FOUR courses for a total of 24 hours and it is oriented to PhD students, postdocs and early career researchers, both in mathematics and in physics. Interaction with and among professors will also be encouraged. Lecturers: - Sergio Cacciatori (Universita' dell'Insubria): "Foundational Aspects of Quantum Gravity" - Claus Kiefer (University of Cologne): "Canonical Quantum Gravity and the Problem of Time" - Pierpaolo Mastrolia (Universita' di Padova): "Modern Methods for Quantum Fields and Gravity: Amplitudes, Integrals, and EFT" - Roberto Percacci (Scuola Internazionale Superiore di Studi Avanzati): "Covariant Quantum Gravity" +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1.7. 28th International Summer School on Global Analysis and Its Applications: Mathematical Foundations of Physical Field Theories, Brasov, Romania --------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2025/12/19/28th-international-summer-sch... Starting: 2026-08-17 to 2026-08-21 Location: Brasov, Romania Additional Information: https://www.lepageri.eu/summer-school-2026 Contact: mathfieldtheoryfoundations26[AT]gmail.com The summer school program consists in: 1. Three main lecture series: - Conservation laws in relativistic theories and gauge natural theories (L. Fatibene) - Metric-affine theories of gravity and extensions/modifications of General Relativity (S. Capozziello) - Variational principles in mechanics and field theory (Z. Urban) 2. Several short lectures delivered by recognized specialists. 3. A poster session, where school participants can present their current work. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1.8. IWARA 2026, Mexico City, Mexico --------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2026/01/01/iwara-2026-mexico-city-mexico... Starting: 2026-08-31 to 2026-09-04 Location: Mexico City, Mexico Additional Information: https://indico.global/event/16048/ Contact: tonatiuh.matos[AT]cinvestav.mx Dear Colleague, the International Workshop on Astronomy and Relativistic Astrophysics (IWARA) 2026 will be held in Mexico City, August 31 - September 4, 2026 https://indico.global/event/16048/ This event is the twelfth in a series of meetings that bring together scientists working in gravitation, cosmology, astroparticle physics, nuclear physics, and related fields. As in previous years, the IWARA2026 meeting sessions will consist of invited lectures and contributions, poster sessions, and will address, among other topics, recent advances in the following areas: * General relativity and gravitation * Gravity and the unification of fundamental interactions * New directions for general relativity * Theoretical and observational cosmology * Dark energy and dark matter * Gravitational waves * Quantum gravity and quantum cosmology * Black hole physics and astrophysics * Inflation * First instants of the Universe * Cosmic microwave background radiation * First stars, hypernovae, and faint supernovae in the Universe * White dwarfs, neutron stars and pulsars * Gamma-ray emission in the Universe * High energy cosmic rays * Strange matter and strange stars * High-energy cosmic neutrinos * Blazars * Magnetic fields in the Universe Please save the date. Yours sincerely Local Organizing Committee * Tonatiuh Matos (chair) - Cinvestav, tonatiuh.matos[AT]cinvestav.mx * Tula Bernal, UAChapingo, tbernalm[AT]chapingo.mx * Argelia Bernal, UGto. bernal.a[AT]ugto.mx * Gabriela Piccinelli - FES-Aragon-UNAM, itzamna[AT]unam.mx * Alberto Vaquez, ICF-UNAM, javazquez[AT]icf.unam.mx * Peter Otto Hess - ICN-UNAM, hess[AT]nucleares.unam.mx Cesar Zen Vasconcellos - ICRANet, UFRGS, Brazil +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ============================================== 2. Jobs ============================================== 2.1. Postdoctoral Research, Multimessenger Astrophysics, Winston-Salem, NC, USA ------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/?p=30381 Deadline: 2028-12-31 Location: Winston-Salem, NC, USA Additional Information: https://wfu.wd1.myworkdayjobs.com/Staff_Career_Website_live/job/Winston-Sale... Contact: wakejobs[AT]wfu.edu Job Description Summary: The Wake Forest Department of Physics invites applications for a postdoctoral research position in multi messenger astrophysics. The successful applicant will work with Professor Caitlin Witt on projects related to pulsar timing arrays and electromagnetic searches for supermassive black hole binaries. The postdoctoral scholar will have the opportunity to work on developing new methods to detect gravitational waves with pulsar timing data, play a substantial role in searching upcoming cutting-edge pulsar timing array datasets for gravitational wave signals, and develop methods for analysis of optical time-domain surveys. The scholar will also have the opportunity to mentor students in the group. Expertise with gravitational wave or electromagnetic survey data analysis in any frequency band is desired but not required. Candidates are required to have a Ph.D. in Physics or Astronomy/Astrophysics or a related field before the date of hire, expected in fall 2026. The position is for two years, with a third-year extension possible depending on performance and available funding. Applications received before January 15, 2026, will receive full consideration, and review of applications will continue until the position is filled. Application Instructions: To apply, please submit: 1. A cover letter 2. Curriculum vitae (CV) 3. 2-3-page research statement 4. The applicant should also arrange for 3 letters of recommendation to be sent directly to Dr. Caitlin Witt at wittc[AT]wfu.edu Essential Functions: Will work with the Professor on projects related to pulsar timing arrays and electromagnetic searches for supermassive black hole binaries. The postdoctoral scholar will have the opportunity to work on developing new methods to detect gravitational waves with pulsar timing data and play a substantial role in searching upcoming cutting-edge pulsar timing array datasets for gravitational wave signals and develop methods for analysis of optical time-domain surveys. The scholar will also have an opportunity to mentor students in the group. Required Education, Knowledge, Skills, Abilities: Ph.D. in Physics, Astronomy/Astrophysics or a related field Strong background in astronomical data analysis Proficiency with Bayesian Statistics Strong publication record in relevant venues Strong communication and collaboration skills Preferred Education, Knowledge, Skills, Abilities: Experience in multimessenger astronomy, nanohertz gravitational wave analysis with pulsar timing arrays, or supermassive black hole binary searches in electromagnetic surveys. Interest in interdisciplinary research and real-world impact Accountabilities: Responsible for own work. Physical Requirements: Sedentary work primarily involves sitting/standing, communicating with others to exchange information; repeating motions that may include the wrists, hands, and/or fingers: and assessing the accuracy, neatness, and thoroughness of the work assigned. Environmental Conditions: No environmental conditions. Wake Forest University: Founded in 1834, Wake Forest University is a private, coeducational institution dedicated to academic excellence in liberal arts, graduate, and professional education. With over 5,400 undergraduates and 3,500 graduate and professional students, the student-faculty ratio is 11:1. Wake Forest is a collegiate university offering a vibrant, intellectual community with a rich cultural life, an impressive array of facilities, and a strong athletics program competing in the Atlantic Coast Conference (ACC). Since its founding, the University has adopted the motto Pro Humanitate, which is exemplified by a deep institutional commitment to public service and engagement with the world. Wake Forest University is in Winston-Salem, a beautiful, mid-sized city centrally located in the Piedmont-Triad region of North Carolina. A family-friendly city with high-quality schools, a wide selection of restaurants and shops, outdoor recreational activities, and numerous special events, it is known for its vibrant and thriving arts and innovative scenes. Residents enjoy proximity to the beautiful Blue Ridge Mountains (1.5 hours) and Atlantic beaches (4 hours), a moderate climate with four distinct seasons, and a very reasonable cost of living. Winston-Salem offers many of the amenities of a large city but with the sense of community and quality of life of a small town. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2.2. Research fellowships in gravitational physics, Lisbon, Portugal ------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2025/12/04/research-fellowships-in-gravi... Deadline: 2025-12-15 Location: Lisbon, Portugal Additional Information: https://centra.tecnico.ulisboa.pt/ Contact: david.hilditch[AT]tecnico.ulisboa.pt The gravity group (grit) at Instituto Superior Tecnico, Lisbon invites potential candidates to express their interest in the upcoming FCT grant opening. The group can support a small number of applications, and we therefore ask interested parties to send a cv, publication list and research statement to David Hilditch (david.hilditch[AT]tecnico.ulisboa.pt) with the subject "FCT-Application-2025" by December 15th 2025, when the call itself opens, see here: https://www.fct.pt/en/concursos/concurso-estimulo-ao-emprego-cientifico-indi... The grant itself offers a three year position, with two different levels available depending on experience. Successful applications would be expected to start in Spring 2027, with a certain degree of flexibility. Information about both the team and the broader CENTRA research unit to which grit belongs can be found at the link attached to this advertisement. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2.3. Postdoctoral Research Associate Position in Astrophysics, Charlottesville, VA, USA ------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2025/12/08/postdoctoral-research-associa... Deadline: 2025-12-31 Location: Charlottesville, VA, USA Additional Information: https://jobs.virginia.edu/us/en/job/R0078342/Research-Associate-in-Astronomy Contact: david.nichols[AT]virginia.edu The University of Virginia (UVA) invites applications for multiple Postdoctoral Research Associate, Interdisciplinary Postdoctoral Fellowship. Research Associate positions as part of the new, interdisciplinary Interconnected Cosmos Initiative (ICI). ICI brings together Astronomy, Physics, Chemistry, Environmental Sciences, Engineering (including Computer Science, Data Science, and Materials Science), and partners such as the National Radio Astronomy Observatory (NRAO) to tackle major questions in modern astrophysics, astrochemistry, planetary science, and cosmology. ICI Postdoctoral Research Associates are expected to lead ambitious research programs that address cutting-edge problems in astronomy. A core expectation of these positions is the development of an interdisciplinary research plan: successful applications must clearly articulate how the proposed work will be grounded in, and jointly supervised across, at least two departments at UVA. A distinctive feature of the ICI postdoctoral positions is a dual-mentor model. Each Postdoctoral Research Associate will have two mentors whose primary appointments cross departments or institutions (for example, Astronomy and Physics, Astronomy and Computer Science, or UVA departments and NRAO). In their cover letter, applicants must either identify: Specific faculty/scientists they wish to work with as potential primary and/or secondary mentors, or Preferred departments, research areas, and/or partner institutions (e.g., NRAO), in which case an interdisciplinary mentoring team will be assembled to best match the proposed research program. Projects may be theoretical, observational, computational, or experimental in nature, provided they leverage UVA's and NRAO's cross-departmental strengths. The Postdoctoral Research Associates will participate actively in departmental and Initiative-wide activities, including interdisciplinary workshops, seminars, and collaborations with national and international partners. PRAs will have access to UVA's high-performance research computing resources and telescope/instrumentation collaborations. and will have opportunities to mentor graduate and undergraduate students as part of ICI's broader training mission. UVA is home to a vibrant postdoctoral community, with additional opportunities for networking and professional development through the PhDPlus Program and UVA Postdoctoral Association. All positions will be based at UVA in Charlottesville and will begin with an initial one-year appointment, with the expectation of annual renewal up to three years, contingent upon satisfactory performance and the availability of funding. QUALIFICATION REQUIREMENTS: Applicants are required to have a Ph.D. in astrophysics or related discipline by the appointment start date. APPLICATION PROCEDURE: Apply online at https://uva.wd1.myworkdayjobs.com/UVAJobs/job/Charlottesville-VA/Research-As... and attach as a single compiled PDF document that includes a cover letter, CV, list of publications, summary of previous and current research (limited to 3 pages, including references), research proposal (limited to 3 pages of text plus up to 2 pages of references/figures). Applicants should also arrange for 3 letters of recommendation to be submitted to https://virginia.app.box.com/f/4cf369b6ae3a4ecfa8c678f044bdadfe with the file name format "CandidateLastName_ReferenceLastName_ICI.pdf" by the due date. APPLICATION DEADLINE: Review of applications will begin on December 31, 2025, however, the positions will remain open until January 31, 2026. The University will perform background checks on all new hires prior to employment. Please direct questions regarding this position to Ilse Cleeves (lic3f[AT]virginia.edu). Applicants are also welcome to connect with members of the steering committee for help in developing appropriate interdisciplinary/interdepartmental contacts: Catherine A Dukes (cdukes[AT]virginia.edu), David A Nichols (dn2ep[AT]virginia.edu), Kent Yagi (ky5t[AT]virginia.edu), Ryan Loomis (rloomis[AT]nrao.edu), Kevin Skadron (skadron[AT]virginia.edu), Nitya Kallivayalil (njk3r[AT]virginia.edu), Ajay Limaye (ajay[AT]virginia.edu), Paul Torrey (ygn5rz[AT]virginia.edu), Rob Garrod (rg5qp[AT]virginia.edu), Jonathan Kropko (jkropko[AT]virginia.edu). For questions about the application process, please contact Richard Haverstrom, Academic Recruiter, at rkh6j[AT]virginia.edu. This position is eligible for health insurance through the UVA Health Plan. For more information on the benefits, see the websites for the Office of Postdoctoral Affairs (https://postdoc.virginia.edu) and University Human Resources (https://hr.virginia.edu/benefits). The University of Virginia is an equal opportunity employer. All interested persons are encouraged to apply, including veterans and individuals with disabilities. Click here to read more about UVA's commitment to non-discrimination and equal opportunity employment. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2.4. Postdoctoral position in gravitational physics, Oxford, MS, USA ------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2025/12/08/postdoctoral-position-in-grav... Deadline: 2026-01-05 Location: Oxford, MS, USA Additional Information: https://www.phy.olemiss.edu/ Contact: lcstein[AT]olemiss.edu The gravity group at the University of Mississippi invites applications for a postdoctoral researcher in gravitational physics, with a focus on gravitational-wave modeling for LISA. The position is for two years, with potential for renewal for a third year contingent on performance and availability of funding. A PhD in physics/mathematics/astronomy is required by the time of the initial appointment. The successful applicants will also develop and advance an independent research program, collaborate with UMiss gravity group faculty (Leo Stein, Anuradha Gupta, James Bonifacio, and Luca Bombelli) on their research, and help to train UMiss students. UMiss is a member of the Simulating eXtreme Spacetimes (SXS) collaboration, the LISA consortium, and the LIGO Scientific Collaboration (LSC), and will thus provide ample opportunities to collaborate with other SXS, LISA, and LSC member institutions. The nominal starting date for the position is Sep. 1, 2026, but is flexible. Applicants should submit an application by sending an email to grpostdoc[at]phy.olemiss.edu, including: a complete CV in PDF format (including publication list); a research proposal which covers research interests and experience; and contact information for three professional references who may provide letters. Please arrange for your references to also mail letters to this same address. Use the email subject "Gravity postdoc." Review of applications will begin Jan. 5, 2026 and will continue until the position is filled. Please direct questions about the position to Leo Stein lcstein[AT]olemiss.edu. The University of Mississippi provides equal opportunity for qualified individuals in employment and education programs and activities. The University does not discriminate on the basis of race, color, gender, sex, pregnancy, sexual orientation, gender identity or expression, religion, national origin, citizenship, age, disability, veteran status, or genetic information. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2.5. Postdoctoral Research Fellow in Gravitational Wave Observations, Birmingham, UK ------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/?p=30419 Deadline: 2026-01-18 Location: Birmingham, UK Additional Information: https://edzz.fa.em3.oraclecloud.com/hcmUI/CandidateExperience/en/sites/CX_6001/job/8427/?utm_medium=jobshare&utm_source=External+Job+Share Contact: p.schmidt[AT]bham.ac.uk The Institute for Gravitational Wave Astronomy at the University of Birmingham, United Kingdom, invites applications for a fixed-term postdoctoral position in gravitational-wave astronomy from April 1, 2026 (start date flexible) until September 30, 2028. The appointment may be extended depending on the availability of funds and comes with a generous travel budget. The successful candidate will work with Dr Gregorio Carullo, Dr Geraint Pratten, Dr Patricia Schmidt and Prof Alberto Vecchio on topics including gravitational-wave data analysis and parameter estimation, analytical modelling of gravitational-wave sources, numerical relativity simulations of compact binaries, surrogate modelling and machine learning. The applicant is expected to have a PhD in physics or a related subject, with a background in data analysis techniques and analytical and/or numerical modelling of compact binaries. They will contribute to the activities of the LIGO Scientific Collaboration, and will also have the opportunity to join the LISA Consortium, the Einstein Telescope Collaboration, and the Cosmic Explorer Consortium. The Institute for Gravitational Wave Astronomy provides a vibrant and diverse environment with expertise across key areas of gravitational-wave astronomy: From theoretical to experimental gravitational-wave research, with applications to present and future-generation detectors, theoretical astrophysics, transient astronomy, gravitational-wave data analysis and source modelling, including numerical relativity and general relativity theory. The candidate will have the opportunity to engage in collaborative research within the Institute. The University of Birmingham is an equal opportunity employer. The School of Physics and Astronomy is an Athena SWAN Silver Award holder and JUNO Champion, welcomes people from all backgrounds and is committed to fostering an inclusive environment where diversity is at the heart of who we are. We encourage applications from all qualified applicants; those from minority groups who are under-represented in this discipline are particularly welcome. Applications should include a CV, list of publications, and a statement of past and future research activities of two pages. The deadline for application is January 18th, 2026 for full consideration. Applications should be submitted through the University of Birmingham job portal (Research Fellow in Gravitational Waves - Physics and Astronomy - 106778 - Grade 7). Applicants should also arrange for three reference letters to be sent to Ms Nicola Holloway (n.holloway[AT]bham.ac.uk) by the application deadline. Remote interviews are expected to take place in the period January 23rd to February 6th, 2026. For further information and informal inquiries please contact Dr Gregorio Carullo (G.Carullo[AT]bham.ac.uk), Dr Geraint Pratten (G.Pratten[AT]bham.ac.uk), Dr Patricia Schmidt (P.Schmidt[AT]bham.ac.uk) and Prof Alberto Vecchio (A.Vecchio[AT]bham.ac.uk). +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2.6. PhD positions in theory, observations, and instrumentation, Prague, Czechia ------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/?p=30420 Deadline: 2026-01-15 Location: Prague, Czechia Additional Information: https://www.mff.cuni.cz/en/physicsphd/f1/program-overview Contact: phd-f1[AT]matfyz.cuni.cz We are offering multiple 4-year PhD positions in Prague, Czechia, in the fields of Astronomy & Astrophysics, Cosmology, Astroparticle Physics, Gravity, String Theory, Mathematical Physics, and Atomic and Molecular Physics. We will begin accepting application December 15 until the deadline on January 15 2026 for positions beginning in the Fall semester of 2026. PhD thesis research will be conducted at one of the participating institutions in Prague: Charles University (Institute of Theoretical Physics and Astronomical Institute) and Czech Academy of Sciences (Institute of Physics, Astronomical Institute, Institute of Physical Chemistry, and Nuclear Physics Institute). The PhD degrees are awarded by Charles University. The positions are funded by a combination of government stipend, individual grants (national or EU, including ERC), and institutional fellowships. The positions are open to candidates of any nationality. Our PhD program is international with majority of students coming from abroad. Benefits depend on the type of the working contract, but all PhD students receive significantly discounted public transport, possibility of staying in student dormitories, free "Czech as foreign language" classes, and subsidized meals depending on the type of work contract. There is only symbolic tuition for foreign PhD students. Prague remains cheaper than other comparable European cities while offering similar level of comforts and entertainments. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2.7. Postdoctoral Fellowships in Theoretical Astrophysics, Copenhagen, Denmark ------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/?p=30421 Deadline: 2026-01-07 Location: Copenhagen, Denmark Additional Information: https://academicjobsonline.org/ajo/jobs/31378 Contact: mpessah[AT]nbi.dk The Theoretical Astrophysics Group in the Niels Bohr International Academy (NBIA) at the Niels Bohr Institute invites expressions of interest for a 3-year postdoctoral fellowship at the interface between astrophysical fluid dynamics and gravitational wave astrophysics. The fall of 2026 would be the preferred starting date. Interested individuals are encouraged to submit all material using this website before January 7th, 2026, but the search will continue beyond this date. The Theoretical Astrophysics Group in the Niels Bohr International Academy (NBIA) at the Niels Bohr Institute invites expressions of interest for a 3-year postdoctoral fellowship at the interface between astrophysical fluid dynamics and gravitational wave astrophysics. The fall of 2026 would be the preferred starting date. Interested individuals are encouraged to submit all material using this website before January 7th, 2026, but the search will continue beyond this date. We are seeking highly motivated, outstanding individuals who will contribute to and develop research programs related to the dynamics and observational signatures of compact binary mergers. Expertise in astrophysical fluid dynamics, magnetohydrodynamics, radiative transfer, gravitational-wave astrophysics, and/or high-performance computing will be a valuable asset. Group members have access to some of the largest dedicated astrophysics computer resources in Scandinavia, including a general-purpose cluster with more than 10,000 cores, a GPU cluster, a petabyte of storage, and dedicated data analysis servers. Postdoctoral fellows are expected to conduct independent research and interact with other NBIA members. They have the opportunity to guide students, teach courses at various levels, participate in outreach activities, and organize international meetings and PhD schools. The Niels Bohr International Academy fosters the traditions of internationalism, interdisciplinary science, and excellence in physics, which have characterized the Niels Bohr Institute for more than a century. The NBIA functions as a primary center for fundamental research, including theoretical and computational astrophysics, particle astrophysics, gravitational physics, high-energy particle physics, quantum physics, and biophysics. The University of Copenhagen wishes to reflect the diversity of society and welcomes expressions of interest from all qualified individuals, regardless of personal background. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2.8. Postdoc position in quantum gravity, Heidelberg, Germany ------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/?p=30427 Deadline: 2026-01-01 Location: Heidelberg, Germany Additional Information: https://academicjobsonline.org/ajo/jobs/30948
 Contact: eichhorn[AT]thphys.uni-heidelberg.de Applications are invited for a postdoc position (of at least two years, a further extension may be possible, subject to the availability of funding) in quantum gravity. The position is in the research group of Astrid Eichhorn at the Institute for Theoretical Physics at Heidelberg University. The research topics in the group include asymptotically safe gravity, causal set quantum gravity, tensor models for quantum gravity the phenomenology of quantum gravity and black holes beyond General Relativity. The research group currently consists of five postdocs, three PhD students, as well as master and bachelor students, who work on the above list of topics, as well as connections between the topics, including connections between distinct approaches to quantum gravity. It is part of a vibrant research environment at the Institute for Theoretical Physics at Heidelberg University. The research group values diversity of perspectives and researchers and accordingly welcomes applications from a broad range of research perspectives and researchers. Applications should be submitted through academicjobsonline. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2.9. TDLI International PhD positions in Astrophysics, Shanghai, China ------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2025/12/15/tdli-international-phd-positi... Deadline: 2026-03-31 Location: Shanghai, China Additional Information: https://tdli.sjtu.edu.cn/en/admission/10033 Contact: leeastronomy[AT]sjtu.edu.cn The Tsung-Dao Lee Institute (TDLI) of Shanghai Jiao Tong University (http://tdli.sjtu.edu.cn) is a national research institute named after the renowned Chinese-American physicist Tsung-Dao Lee (Nobel Prize 1957). TDLI is devoted to fundamental research and graduate training in astrophysics, particle physics, and condensed matter physics. The TDLI astrophysics division currently has 20 faculty members: 16 in astrophysics and 4 in plasma physics (including laboratory astrophysics). TDLI/SJTU is building 4.4-meter spectroscopic telescope, to be completed in early 2027, for time-domain science (e.g., supernovae and other transients), cosmology, and exoplanets. The TDLI astrophysics division works closely with the astronomy department at SJTU (http://astro.sjtu.edu.cn/en/). Current faculty members are active in exoplanets and dynamics, high-energy/particle astrophysics, galactic/extragalactic astronomy, and cosmology, with projects in observations, theory, statistics, computation, and instrumentation. In the TDLI astrophysics division, we are looking for talented and highly motivated PhD students for Fall 2026 Admission. Successful applicants are expected to start in September 2026. These positions are funded by TDLI International Graduate Student Scholarships. Other scholarships, such as the Chinese Government Scholarship, Shanghai Government Scholarship, and SJTU Scholarship, are also available. Please apply before Dec 15, 2025, for the 1st round scholarship application and Feb 15, 2026, for the 2nd round scholarship application. Self-supported applications are open until May 31, 2026. For details, please refer to the 2026 SJTU Tsung-Dao Lee Institute International Graduate Admissions (https://tdli.sjtu.edu.cn/en/admission/10033). Any other inquiries, please send an email to leeastronomy[AT]sjtu.edu.cn. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2.10. Postdoctoral Position in Gravitational Wave Physics, Tuebingen, Germany ------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2025/12/15/postdoctoral-position-in-grav... Deadline: 2026-01-25 Location: Tuebingen, Germany Additional Information: https://uni-tuebingen.de/en/faculties/faculty-of-science/departments/physics... Contact: kostas.kokkotas[AT]uni-tuebingen.de The Theoretical Astrophysics section (TAT) at the University of Tuebingen invites applications for one (1) postdoctoral research position (Wissenschaftlicher Assistent / Research Assistant, full-time - 100%). The position is expected to start as early as 1 March 2026 and is initially funded until 30 September 2027, with the possibility of an extension for one additional year, subject to funding availability and performance. The salary will be determined according to the German public service scale (TV-L E13). The research activities of TAT are centered on the study of sources of gravitational waves, with an emphasis on the dynamics of neutron stars and black holes. The team currently consists of two (2) postdoctoral researchers, three (3) PhD students, and five (5) MSc students. The successful applicant will carry out independent and original research on the dynamics of relativistic compact objects and the associated emission of gravitational and electromagnetic radiation. In addition, the successful applicant will be expected to contribute to teaching activities for four (4) hours per week. Applications, including a curriculum vitae, a list of publications, a statement of research interests and experience, and the names (address, and email) of up to three potential referees, should be sent to: Prof. Dr. Kostas Kokkotas Theoretical Astrophysics (IAAT), University of Tuebingen, D-72076 Tuebingen, Germany https://www.tat.physik.uni-tuebingen.de/~kokkotas E-mail: kostas.kokkotas_at_uni-tuebingen.de Applications by e-mail are welcome. All applications will receive full consideration until the position is filled. The University of Tuebingen seeks to increase the fraction of female scientists in research and teaching and particularly encourages applications from women. Disabled candidates are given preference if equally qualified. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2.11. Postdoc position in geometric analysis/mathematical general relativity, Lulea, Sweden ------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/?p=30450 Deadline: 2026-01-31 Location: Lulea, Sweden Additional Information: https://web103.reachmee.com/ext/I003/583/job?site=14&lang=UK&validator=47967adc563af74ecd9bf5ba5a3846e8&job_id=9707 Contact: stephen.mccormick[AT]ltu.se The Division of Mathematical Sciences, at the Department of Engineering Sciences and Mathematics at Lulea University of Technology, is now looking for a postdoctoral scholar in geometric analysis or mathematical general relativity to contribute to our growing activities. The scholarship holder will be based in the Division of Mathematical Sciences within the Department of Engineering Sciences and Mathematics at LTU. The project will be carried out in collaboration with Stephen McCormick and is funded by the Kempe Foundation (grant JCSMK25-0130). The tax-free stipend will be 360,000 SEK per year for two years (720,000 SEK total). The purpose of this project is to conduct research in geometric analysis and mathematical general relativity. In particular, the project aims to better understand V-static asymptotically hyperbolic metrics and their relation to definitions of mass in general relativity. Specific research questions during the project may be adapted to the candidate's expertise and interests. For this project, a successful candidate should have a strong background in geometric analysis, mathematical general relativity, or a closely related area. We seek a motivated and enthusiastic candidate capable of working independently and collaborating effectively within a team. Very good skills in both spoken and written English are essential. In order to be eligible for the position you must have a PhD or a foreign degree equivalent to a PhD in mathematics (or closely related field). A doctoral degree awarded no more than five years before the application deadline provides a useful qualification. Starting date: Available immediately, but starting date is negotiable. Full application should include: - A brief cover letter (1 page) outlining your motivation for the position and suitability for the project. - A curriculum vitae (CV) including a full list of publications and contact information of two people willing to act as references. - A brief research statement (1-4 pages) outlining your research interests, including previous work and independent research plans. Applications must be made directly to the university via the external link provided. For further information, applicants are welcome to contact Stephen McCormick, Senior Lecturer, (+46)920-49 1680, stephen.mccormick[AT]ltu.se (email preferred). +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2.12. Postdoctoral Fellows in Astrophysics, Chennai, India ------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/?p=30459 Deadline: 2026-01-31 Location: Chennai, India Additional Information: https://wsgi.cmi.ac.in/applications/ Contact: kocherlakota[AT]cmi.ac.in The Astrophysics Group at the Chennai Mathematical Institute (CMI) invites applications for Institute Postdoctoral Fellowships starting in Fall 2026. These fellowships provide exceptional recent or soon-to-be Ph.D. graduates the opportunity to pursue independent research at CMI for two to three years. The group's research covers a broad spectrum of theoretical and computational astrophysics, including black hole physics, compact objects, gravitational-wave science, relativistic astrophysics, multimessenger astrophysics, and gravity beyond General Relativity. Research activities of the group combine analytical and numerical approaches and involve active collaborations with researchers in India and abroad, supported by a strong theoretical physics community at CMI. The group is a member of the LIGO Scientific Collaboration, the LIGO-India Scientific Collaboration, and the Event Horizon Telescope Collaboration. Fellows will have the freedom to pursue independent research, with guidance and support from CMI faculty, and are expected to be involved in the research and teaching activities at CMI. Alongside your research, you are expected to present your work at national and international conferences, publish in peer-reviewed journals, initiate new research directions and projects, contribute to the preparation of research proposals, and engage with graduate and undergraduate students through supervision and collaboration. You are also strongly encouraged to participate in CMI's weekly physics seminars and the astrophysics group's regular meetings. The details can be found at the CMI website. If you have any queries, please email Ajit Kumar Mehta (ajitkm[AT]cmi.ac.in) Prashant Kocherlakota (kocherlakota[AT]cmi.ac.in) K. G. Arun (kgarun[AT]cmi.ac.in) Application materials (via CMI Academic Job Applications): Curriculum vitae Research statement (max. 5 pages, excluding references) Publication list (refereed papers first) At least three letters of reference should be submitted on the applicant's behalf. Timeline: Applications open: December 15, 2025 Deadline: January 31, 2026 (including reference letters) Offers: End of February 2026 The Chennai Mathematical Institute is an equal-opportunity employer. All qualified applicants will receive consideration without regard to sex, caste, religion, age, race, color, sexual orientation, gender identity, national origin, or disability. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2.13. Research Associate in Gravitational Wave Astronomy, Cardiff, UK ------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2025/12/18/research-associate-in-gravita... Deadline: 2026-01-16 Location: Cardiff, UK Additional Information: https://krb-sjobs.brassring.com/TGnewUI/Search/home/HomeWithPreLoad?PageType=JobDetails&partnerid=30011&siteid=5460&Areq=21127BR Contact: hannammd[AT]cardiff.ac.uk The Cardiff University Gravity Exploration Institute is seeking applications to fill the position of Research Associate in gravitational-wave astronomy. One position is available at the Grade 6 level for two years. Cardiff has a long history of involvement in ground-based gravitational-wave physics, particularly in source modelling, data analysis, and astrophysical and cosmological interpretations (Fabio Antonini, Stephen Fairhurst, Mark Hannam, Vivien Raymond, Isobel Romero-Shaw, Patrick Sutton), instrument design and commissioning (Katherine Dooley, Hartmut Grote, Keiko Kokeyama), electromagnetic follow-up of gravitational-wave events (Cosimo Inserra), and education and public outreach (Chris North). The successful candidate will contribute to one or more of our research areas in numerical relativity, source modelling, gravitational-wave data analysis, and astrophysical population inference. This post is full time and is fixed term for two years. Salary: GBP 41,064 - 46,049 per annum (Grade 6) Job ref: 21127BR For informal enquiries about the post please contact Mark Hannam (hannammd[AT]cardiff.ac.uk). For informal enquiries about working at Cardiff School of Physics and Astronomy please contact PhysicsHR[AT]cardiff.ac.uk The closing date is January 16, 2026. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2.14. Postdoc in neutron star EoS, Coimbra, Portugal ------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2025/12/18/postdoc-in-neutron-star-eos-c... Deadline: 2026-02-01 Location: Coimbra, Portugal Additional Information: NA Contact: hpais[AT]uc.pt One-year Post-doctoral Fellowship in the field of Compact objects - building a new framework for the equation of state Location: Center of Physics of the University of Coimbra, Coimbra, Portugal Starting date: flexible, between April 15 2026 and August 1 2026 Duration of the grant: 1 year, non-renewable Requirements: The candidate must have a PhD in Physics or related areas at the beginning of the fellowship. Additional skills: Experience in the field of the micro- and macrophysics of neutron stars will be appreciated. Experience with HPC computing and Bayesian techniques will be highly valuable. Monthly allowance: 1901 EUR, tax-free. Work summary: The discovery of gravitational waves (GW) from the collision of two neutron stars GW170817, followed by a gamma-ray burst and a glowing kilonova, marked the dawn of a new era in astrophysics. This groundbreaking event revealed that by combining observations from GW detectors and telescopes, we could unlock the secrets of one of the densest objects in the Universe: neutron stars (NS). In this project, we want to develop a NS model based on a relativistic description of baryonic matter. Using computational Bayesian techniques, a flexible model based on microphysical principles, that covers a wide range of densities, proton fractions, and temperatures, bridging the gap between astrophysical observations, ab-initio calculations, and experimental data, will be developed. In a second step, we will generate versatile, realistic and open-source equations of state at zero and finite temperatures. The identification of possible signatures of new degrees of freedom is also of interest. The call will open in February 2026. Interested candidates should contact Prof. Helena Pais (hpais [AT] uc . pt) as soon as possible for further information. They should send a short CV, with a list of publications, and a short statement (1 page max) with their research interests. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2.15. Postdoctoral Positions in Astrophysics, Tashkent, Uzbekistan ------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2025/12/22/postdoctoral-positions-in-ast... Deadline: 2026-03-01 Location: Tashkent, Uzbekistan Additional Information: https://ias.newuu.uz Contact: t.mirzayev[AT]newuu.uz Call for Applications: Postdoctoral Positions in Astrophysics Institute for Advanced Studies (IAS), New Uzbekistan University, Tashkent, Uzbekistan The Laboratory of Astronomy, Cosmology and Space Technologies at the Institute for Advanced Studies, New Uzbekistan University (NewUU), invites applications for two postdoctoral researcher positions. Research Focus - Development of astrophysical models of black holes - Numerical simulations in relativistic astrophysics - Applications of advanced computational methods in theoretical astrophysics Qualifications Ph.D. in Astrophysics, Physics, or a closely related discipline - Strong background in relativistic astrophysics - Good coding skills (C/C++, Python, Fortran, or similar) - Experience with numerical modeling or simulations is an advantage Appointment - Initial term: 1 year - Renewable for up to 2 additional years (1+2 years total) based on performance What We Offer Annual total compensation package of up to $37,000 USD per year, including: - Competitive salary - Monthly apartment/housing support - Standard private medical insurance - 1 round-trip international air ticket per year Supplementary funding opportunities, including: - Additional income through externally funded research grants - Opportunities to apply for additional research funding and lab development grants of the University - Integration into a rapidly growing academic ecosystem with high-level national support Application Materials Applicants should send a single PDF containing: 1. Curriculum Vitae (CV) 2. List of Publications 3. Any additional material that could support the application (optional) Please send your application materials to: t.mirzayev[AT]newuu.uz Application Deadline: March 1, 2026 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2.16. PhD position in mathematical general relativity, Gothenburg, Sweden ------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2025/12/22/phd-position-in-mathematical-... Deadline: 2026-02-23 Location: Gothenburg, Sweden Additional Information: https://www.chalmers.se/en/about-chalmers/work-with-us/vacancies/?rmpage=job&rmjob=14448&rmlang=UK Contact: thomas.backdahl[AT]chalmers.se We are looking for a Doctoral student at the division Analysis and Probability Theory within the Department of Mathematical Sciences at Chalmers University of Technology, Gothenburg, Sweden. The research project is in mathematical general relativity. In this Doctoral project, you will study the mathematics of general relativity. This includes investigations of quasi-linear PDE systems in strongly curved geometries. Of particular interest are problems related to black holes, their stability, uniqueness, decay of fields around them, details about their geometry etc. This is a highly active field with research groups around the world. In this project, you will learn to combine modern analysis techniques like Morawetz estimates with Penrose's Nobel prize winning geometrical insights and formalisms, intricate symmetry operators, spinor techniques and powerful computer algebra tools to efficiently study these problems. A particularly useful technique is to study how different kinds of symmetries can characterize a spacetime and give a manifestly coordinate independent way to measure metric perturbations. The symmetries also yield powerful analysis tools. The nature of the tools also allows broad applicability to other PDE problems. The research project is funded by the Swedish Research Council and will be supervised by Associate Professor Thomas Backdahl. We welcome your application no later than 23 February 2026. For more details about the position, the university, and the application procedure, see the external link. All applications must be made directly to the university via the external link https://www.chalmers.se/en/about-chalmers/work-with-us/vacancies/?rmpage=job.... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2.17. Faculty position in Gravitational-wave and Multi-messenger Astrophysics, Amsterdam, Netherlands ------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2025/12/23/faculty-position-in-gravitati... Deadline: 2026-01-31 Location: Amsterdam, Netherlands Additional Information: https://werkenbij.uva.nl/en/vacancies/faculty-position-in-grappa-center-of-e... Contact: b.w.freivogel[AT]uva.nl The Gravitation and Astroparticle Physics Amsterdam (GRAPPA) Centre of Excellence at The University of Amsterdam is seeking to hire one assistant/associate professor in the area of gravitational-wave and multi-messenger astrophysics. We are especially interested in excellent candidates that can strengthen our connection to current and future gravitational-wave, neutrino, and electromagnetic observatories. The search is primarily focused on hiring at the junior level, but candidates at a more senior level (tenured/associate professors) will also be considered. We have a strong preference for a staff member who enhances the diversity of our staff and will prioritize applicants from members of underrepresented groups. What will you be doing? You are going to drive an excellent research program, teach in the BSc and MSc programs, and become an active member of GRAPPA. Tasks and responsibilities include: conducting independent research in multimessenger astrophysics, resulting in academic publications in peer-reviewed international journals; actively pursuing external funding for research; actively contributing to and developing national and international research networks and other forms of cooperation; actively contributing to the research activities of GRAPPA; developing, coordinating and teaching courses in the BSc and MSc programmes; supervising Bachelor and Master students and co-supervising PhD students; actively contributing to the development and improvement of the broader teaching programmes in the department; taking part in committees and working groups. What are we looking for? The following experience and profile: a relevant PhD degree and preferably postdoctoral experience; excellent research skills, evidenced by a track record of publications in renowned international journals, and talks at international conferences/workshops; excellent didactic abilities; an affinity for teaching at Bachelor and Master level; preferably experience with the (co-)supervision of BSc, MSc and/or PhD students; (the ability to develop) the management skills required for general academic administration, organisation and coordination tasks; potential to attract external funding; excellent communication skills; good command of English and willingness to learn the Dutch language via a supported learning trajectory (B2 requirement after 5 years). What are we offering you? Start dates are negotiable. The position will be filled at the level of Assistant or Associate Professor, depending on qualifications. For exceptionally experienced and qualified candidates, appointment starting as Full Professor could be considered. The starting salary will be in accordance with university regulations for academic personnel and depending on experience and qualifications. It will range from a minimum of EUR 4,728 gross per month up to a maximum of EUR 7,297 gross per month (Assistant Professor, salary scale 11-12), based on full-time employment. This is excluding 8% holiday allowance and 8.3% end-of-year bonus. A favourable tax agreement, the '30% ruling', may apply to non-Dutch applicants. The Collective Labour Agreement of Universities of the Netherlands is applicable. For more information and details of how to apply, see https://werkenbij.uva.nl/en/vacancies/faculty-position-in-grappa-center-of-e... Do you need more information? For science questions, contact Prof. Ben Freivogel (b.w.freivogel[AT]uva.nl). Direct any other questions to Dr Joost van Mameren (j.vanmameren[AT]uva.nl), Institute Manager at the Institute of Physics. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2.18. PhD fellowships at SISSA, Trieste, Italy ------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2025/12/23/phd-fellowships-at-sissa-2/ Deadline: 2026-03-23 Location: Trieste, Italy Additional Information: pica.cineca.it/sissa/phd-agp-01-2026 Contact: phd[AT]sissa.it The gravitational-wave physics group at SISSA (Trieste, Italy) invites applications for PhD positions in gravitational-wave theory, source modeling, science interpretation and data analysis, to start in the fall of 2026. Successful candidates will join the GWSKy project, which an ERC Synergy Grant has recently funded. We are particularly interested in hiring creative and highly motivated candidates who can work collaboratively and independently in a vibrant, welcoming, and synergistic group. The ERC-funded project called "Making sense of the unexpected in the gravitational-wave sky (GWSky)" is led by PIs Enrico Barausse (SISSA, Trieste, Italy), Zvi Bern (University of California, Los Angeles, US), Alessandra Buonanno (Albert Einstein Institute, Potsdam) and Maarten van de Meent (Niels Bohr Institute, Copenhagen, Denmark). The aim of the GWSky project is to use gravitational-wave measurements by existing and future observatories on the Earth and in space as precision laboratories for fundamental physics, cosmology, and astrophysics. This includes the current LIGO-Virgo-KAGRA detectors, as well as the future ground-based observatories Cosmic Explorer and Einstein Telescope, and the space-based detector LISA. By leveraging the PIs and their team's expertise, the GWSky project aims to develop a groundbreaking framework capable of solving the highly nonlinear equations of Einstein's General theory of Relativity, creating waveform models with unprecedented accuracy, and translating these results into practical tools for interpreting the data. As a consequence, at SISSA we are looking at candidates in the following research areas: numerical-relativity simulations in General Relativity and alternative theories of gravity; environmental effects for binary systems; tests of General Relativity; gravitational-wave data analysis and machine learning; waveform modeling. Applications should be sent via https://pica.cineca.it/sissa/phd-agp-01-2026 **Please tick both the "SISSA fellowship" and "ERC - GWSky fellowship" options within the platform when you apply** Please also https://www.sissa.it/sites/default/files/2024-03/SISSA_IstruzioniCompilazion... for instructions on how to use the application platform The hard deadline for applications is 23-02-2026 13:00 local Italian time. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2.19. Postdoctoral Position at the Interface of Gravity and Quantum Information, Melbourne, Australia ------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2025/12/31/postdoctoral-position-at-the-... Deadline: 2026-01-31 Location: Melbourne, Australia Additional Information: https://withoutspacetime.org/opportunities/eoi/?position_type=postdoc Contact: lucas.hackl[AT]unimelb.edu.au The Mathematical Quantum Information (MQI) Group, led by Lucas Hackl, at the University of Melbourne will be hiring one or more postdocs with expertise and interest across gravity and quantum information, which includes various directions in quantum gravity, relativistic quantum information and more. The postdoc will become part of the WithOut SpaceTime (WOST) Consortium, funded by the John Templeton Foundation (JTF) and supported by the Center for SpaceTime and the Quantum (CSTQ). WHO ARE WE LOOKING FOR: - You will have completed (or you are near completion of) a PhD degree in physics, mathematics or related discipline. You thrive in collaborative environments and working constructively with colleagues to advance the School's goals. - Demonstrated capacity to engage in outstanding research consistent with the strengths and strategic directions of WOST Consortium and the research conducted in the Mathematical Quantum Information Group. - Experience in at least one (preferably two) of the following topics and clear potential to make connections between them: Quantum Information, Relativistic Quantum Information, Quantum Field Theory in Curved Spacetime, Quantum Gravity, General Relativity, Random Matrix Theory. - You will have the opportunity to pursue your own research, engage in the research group and collaborate. Areas of interest could include: Average and typical entanglement entropy for ensembles of quantum states. Hawking radiation, Unruh effect, quantum information in curved spacetime. Quantum information measures in conformal field theories. Symmetry classification of random matrix ensembles and relations to quantum states. Mathematics of bosonic and fermionic Gaussian states and their applications in physics. Quantum reference frames and its interplay with dynamics and quantum information. - We are equally interested in junior postdocs (shortly after completion of their PhD) or senior postdocs (several years of post PhD experience). WHAT WE OFFER: - Cutting-edge research at the intersection of quantum information and gravity. - Opportunity for interdisciplinary collaboration and networking within the WOST Consortium. - AUD110,319 - AUD118,416 p.a., plus 17% super (retirement pension), and benefits! - Travel funding available for both domestic and international trips, potential for longer research at other WOST groups. - Initial duration will be for 2 years with the potential for extension, subject to performance and availability of funding. - Additional opportunities for independent/competitive funding/fellowships: (a) The University of Melbourne offers 3 year independent postdoc fellowships under the McKenzie Fellowship. (b) The Australian Research Council offers the 3 year Discovery Early Career Researcher Award (DECRA). (c) We can also host Feodor Lynen Research Fellows through the Alexander von Humboldt Network, which is open to researchers from the German academic system (German citizens or other nationals integrated in the German academic system). ABOUT THE GROUP - Led by Lucas Hackl. - Current group size: 1 x Postdoc, 3 x primary and several affiliated PhD students, 3 x MSc students, 2 x undergraduate interns - Part of both, the School of Mathematics and Statistics (Mathematical Physics Group) and the School of Physics (IBM Quantum Network Hub). - Research interests across quantum information, quantum computing, many body quantum systems, relativistic quantum information and quantum gravity. ADDITIONAL COMMENTS: - Depending on personal circumstances, there are different visa options (ranging from 2-4 year visa to permanent residency). - The total net pay can be estimated using online calculators, such as paycalculator.com.au. Rough estimate of net pay (AFTER TAX): Ca. AUD84,000 p.a. (currently: ca. USD56,000 or EUR48,000) or AUD7,000 per month (currently: ca. USD4,666 or EUR4,000). - Depending on the visa status, it may be required to buy private health insurance. - 17% of your gross salary (listed above) will be contributed to a pension account (superannuation fund) of your choice. You are able to choose your preferred superannuation account and how the balance should be invested. The accumulated pension sum can be withdrawn in accordance with the Australian superannuation laws. HOW TO APPLY: - Please use the URL below to the WOST Consortium Expression of Interest Webform and submit. - Please indicate clearly when you are available to start the position. - Please direct any questions to Lucas Hackl (email listed below). TIMELINE: - We expect to start reviewing applications in February, which may take 1-2 months. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ============================================== 3. News ============================================== 3.1. Gravity Research Foundation, Awards for Essays for 2026 ------------------------------------------------------------ Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2025/12/14/gravity-research-foundation-a... Additional Information: https://www.gravityresearchfoundation.org GRAVITY RESEARCH FOUNDATION PO BOX 81389 WELLESLEY HILLS MA 02481-0004 USA 2026 Awards for Essays on Gravitation In 2026, for our seventy-seventh competition, the trustees of the Gravity Research Foundation are offering five awards for short essays for stimulating thought and encouraging work on the phenomenon of gravitation. The stipulations follow: (1) We will make these Awards on May 15, 2026, for the best and most well-written essays about gravitation, its theory, applications, or effects. Essays must be 10 pages or fewer using double-spacing, single column, 12-point font and 1-inch margins including a small number of diagrams, tables, and equations. Title and reference pages are additional and not included in the page count. The subject matter may or may not be original research. The essay competition is not intended to replace a research journal where the detailed results of original research are submitted. Essays should not give lengthy detailed mathematical calculations nor detailed descriptions of an experimental setup. Essay ideas should be self-contained and understandable - not dependent on reading other documents. (2) The First Award will be $4000.00 The Second Award will be $700.00 The Third Award will be $600.00 The Fourth Award will be $500.00 The Fifth Award will be $400.00 (3) Essay must be typed in English and e-mailed in a single PDF file by midnight March 31, 2026. One essay only will be accepted from each author. Notify us within 24 hours if you do not receive an e-mail confirmation of your submission. (4) Title page should include all the following: essay title, authors' names (specify corresponding author), e-mail and mailing addresses, submission date, an abstract of 125 words or fewer, and the statement: "Essay written for the Gravity Research Foundation 2026 Awards for Essays on Gravitation." Pages should be numbered. (5) The decision of the judges will be final. No reviews or comments will be provided. (6) Contestants can find the awards announcement posted on our website: gravityresearchfoundation.org around May 15, 2026. (7) The five award-winning essays will be published in a special issue of the International Journal of Modern Physics D (IJMPD). Authors of essays designated Honorable Mention will be invited to submit their essays to the IJMPD where these may undergo additional refereeing at editorial discretion for possible publication. Authors of all other essays are free and encouraged to publish their essays after May 15th. Submission e-mail address: George M. Rideout, Jr., President, grideoutjr[AT]aol.com Recent First Award Winners: 2025 - Sreenath K. Manikandan, Stockholm University and KTH Royal Institute of Technology, Sweden and Frank Wilczek, Massachusetts Institute of Technology, MA, T. D. Lee Institute and Wilczek Quantum Center, China, Arizona State University, AZ and Stockholm University, Sweden 2024 - Tom Banks, Rutgers University, NJ and Willy Fischler, University of Texas, TX 2023 - Maciej Dunajski, University of Cambridge, UK 2022 - Cenalo Vaz, University of Cincinnati, OH 2021 - Samir D. Mathur, The Ohio State University, OH 2020 - Maulik Parikh and George Zahariade, Arizona State University, AZ and Frank Wilczek, Arizona State University, AZ, Stockholm University, Sweden, Massachusetts Institute of Technology, MA and Shanghai Jiao Tong University, China 2019 - Alessio Belenchia, Queen's University, England; Robert M. Wald, Enrico Fermi Institute, IL; Flaminia Giacomini, Esteban Castro-Ruiz, Caslav Brukner and Markus Aspelmeyer, Institute for Quantum Optics and Quantum Information, Austria 2018 - Jessica Santiago and Matt Visser, Victoria University of Wellington, New Zealand 2017 - Ivan Agullo, Louisiana State University, LA; Adrian del Rio and Jose Navarro-Salas, Centro Mixto Universidad de Valencia-CSIC, Spain 2016 - Stephen L. Adler, Institute for Advanced Study, NJ 2015 - Gerard 'Hooft, Utrecht University and Spinoza Institute, the Netherlands 2014 - Lawrence M. Krauss, Arizona State University, AZ and Frank Wilczek, Massachusetts Institute of Technology, MA 2013 - Baocheng Zhang, Qing-yu Cai and Ming-sheng Zhan, Chinese Academy of Sciences, China and Li You, Tsinghua University, China 2012 - Claus Kiefer and Manuel Kraemer, University of Cologne, Germany 2011 - Ivan Agullo, Pennsylvania State University, PA and Leonard Parker, University of Wisconsin-Milwaukee, WI ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 3.2. WOST School 2026 - Exploring Quantum WithOut SpaceTime, Les Houches, France ------------------------------------------------------------ Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2025/12/17/wost-school-2026-exploring-qu... Additional Information: https://withoutspacetime.org/meetings/les-houches-school/ WOST School 2026 - Exploring Quantum WithOut SpaceTime Dates: Aug 31, 2026 - Sep 11, 2026 This school is aimed at graduate students and postdoctoral researchers. Its goal is to cover both foundational and advanced topics at the interface of quantum information and quantum gravity. Location: Les Houches, France Organizers: Ivan Agullo, Pablo Arrighi, Eugenio Bianchi, Lin-Qing Chen, Beatriz Elizaga de Navascues, Lucas Hackl, Augustin Vanrietvelde Support: The school will be generously supported by WithOut SpaceTime (WOST) Consortium, funded by the John Templeton Foundation (JTF), and the Center for SpaceTime and the Quantum (CSTQ). More information regarding lecturers, topics and application process will be released in the coming months. Please feel free to forward this information to interested early career researchers, particularly early PhD students working across gravity and quantum information. ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++