########################################### Table of Contents ########################################### 1. Conferences 1.1. IAGRG School on Gravitation and Cosmology, Bengaluru, India 1.2. 6th Gravitational Wave Open Data workshop (online) 1.3. DArk Energy: from Fundamental Theories to Observations (and back), Frascati, Italy 1.4. Quantum gravity phenomenology in the multi-messenger approach, Rijeka, Croatia 1.5. 18th Italian-Korean Symposium on Relativistic Astrophysics, Pescara, Italy 1.6. PWF Latin America - Advanced Lectures on Theoretical Physics: General Relativity and Cosmology (online) 1.7. 1st Trieste meeting on the physics of gravitational waves, Trieste, Italy 1.8. Asymmetric Binaries meet Fundamental Astro-Physics, L'Aquila, Italy 1.9. Geometric Foundations of Gravity 2023, Tartu, Estonia 1.10. Workshop on gravity and quantum field theory, Montevideo, Uruguay 1.11. 1st Australia-New Zealand Student Conference on General Relativity (Online) 1.12. Gravity 2023: Dawn of field theoretic approach, Kyoto, Japan 1.13. Infinity on a Gridshell, Copenhagen, Denmark 1.14. XXV SIGRAV Conference on General Relativity and Gravitation, Trieste, Italy 1.15. Women in Mathematical Relativity (online) 2. Jobs 2.1. ESA Archival Research Visitor Programme, Madrid (Spain) and Noordwijk (Netherlands) 2.2. Assistant/Associate Professor position, Birmingham, UK 2.3. SISSA for Women in Physics, Trieste, Italy 2.4. PhD positions in gravitational-wave astronomy, Milan, Italy 2.5. Lecturer in gravity, Southampton, UK 2.6. Scientific software developers in gravitational wave physics, Palma, Spain 2.7. Lecturers in Physics (Astronomy/Astrophysics) London, UK 2.8. Three postdoc positions in theoretical gravitational physics, Prague, Czechia 2.9. ERC-funded postdoc positions in Relativistic Theoretical Astrophysics, Frankfurt, Germany 3. News 3.1. Invitation to join a research project on the very nature of gravitation 3.2. Living Reviews: Astrophysics with the LISA / Dynamical boson stars 3.3. Nominations for the 2023 Karl Schwarzschild Prize 3.4. Fifth Zeldovich meeting: third announcement ============================================== 1. Conferences ============================================== 1.1. IAGRG School on Gravitation and Cosmology, Bengaluru, India --------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2023/03/03/iagrg-school-on-gravitation-a... Starting: 2023-10-09 to 2023-10-20 Location: Bengaluru, India Additional Information: https://www.icts.res.in/program/IAGRG Contact: iagrg[AT]icts.res.in We are living in an exciting era of great discoveries in the field of gravitational physics and cosmology. The detection of gravitational waves by LIGO in 2016 has led to an enormous interest in various aspects of the physics of compact objects. The recent observation of the black hole shadow by the Event Horizon Telescope (EHT) also initiated diverse research programs. The primary emphasis of these works is twice folded; first, to test the theory of general relativity at the strong-field regime, and second to find possible signatures of new physics. The second Indian Association for General Relativity and Gravitation (IAGRG) school on Gravitation and Cosmology aims to train young researchers in these emerging areas of Gravitational physics. The program is mostly intended for graduate students working (or starting to work) on gravitational physics, cosmology, and related areas. In this school, the emphasis would be on cutting-edge topics on the physics of compact objects, both theoretical and observational. We have chosen four contemporary topics to be taught by the leading experts. These topics are: 1. Wald's covariant phase space formalism by Prof. Sumanta Chakraborty, IACS Kolkata, India. 2. Black holes in General Relativity and beyond by Prof. Thomas Sotiriou, University of Nottingham, UK. 3. Dynamical horizons and their application by Prof. Badri Krishnan, Radboud University, Netherlands. 4. Neutron star perturbation theory by Prof. Nils Andersson, University of Southampton, UK. The school will be for two weeks. There will be two 1.5 hours of lectures and two tutorials per day and a total of 10 lectures and 10 tutorial sessions weekly. The program is intended mainly for graduate students (Ph.D.) working (or starting to work) on gravitational physics, cosmology, and related areas. An introductory course on general relativity will be a prerequisite for the school. Senior Ph.D. students will be given preference. We also welcome applications from young postdoctoral researchers. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1.2. 6th Gravitational Wave Open Data workshop (online) --------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/?p=26258 Starting: 2023-05-15 to 2023-05-17 Location: (online) Additional Information: https://www.gw-openscience.org/odw/odw2023/ Contact: gwosc[AT]igwn.org The LIGO, Virgo, and KAGRA (LVK) collaboration announces its 6th edition of the Gravitational Wave Open Data workshop (GWODW) for May 15th to the 17th 2023. The workshop will tackle topics such as access to LVK public data, introduction to GW detectors and their data, techniques for GW data analysis, and interpretation of compact binary coalesce signals. As the last edition, the 6th GWODW will be a hybrid workshop. There will be remote lectures offered by LVK scientists on May 15th-17th from 9.00 CEST to 10.30 CEST. In parallel, each institution or group participating in the workshop can host an in-person "study hub". Study hubs are the central forum where the participants of the workshop can meet, discuss, and work together on the tutorial material prepared for the workshop. Study Hubs can be also a place to stream lectures. We warmly invite every institution hosting a GW expert that participates in the workshop to organize a study hub. More details about the workshop can be found on the conference website. There is no fee for the workshop. Registrations to the workshop will be managed via Thinkific and the link for the streaming will be both uploaded on the platform and sent to the participants. If you are planning to organize a study hub at your institution, please follow the instructions on the conference website. We are looking forward to meeting you The ODW organizing committee +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1.3. DArk Energy: from Fundamental Theories to Observations (and back), Frascati, Italy --------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/?p=26279 Starting: 2023-09-11 to 2023-09-15 Location: Frascati, Italy Additional Information: https://agenda.infn.it/event/33387/ Contact: darkenergyconference2023[AT]lists.lnf.infn.it Aim of the conference: The problem of dark energy has unprecedentedly taken a central stage in the gravitation and cosmology research field, also in the view of the discrepancies found in the current expansion of the Universe as derived from Planck data and from local direct measurements. In this regard, we aim at organising an international workshop to discuss dark energy both from the theoretical and observational points of view. The workshop will be a precursor to the growing interest that this topic will gain in the near future due to the Euclid satellite, whose launch is planned for later this year, complementary ground-based observatories and Cosmic Microwave Background data. We would like to gather experts (both from the theory and observational sides) to understand together, through talks and discussion sessions, which predictions of fundamental theories can be tested by observations and, conversely, which new roads in fundamental physics may be opened by the future data. Organising committee: Luca Buoninfante (Nordita) Alexey Koshelev (ShanghaiTech University, Shanghai and University of Beira Interior, Covilha) K. Sravan Kumar (ICG, U. of Portsmouth) Gaetano Lambiase (Universita' degli studi Salerno and INFN) Marina Migliaccio (Universita' di Roma Tor Vergata and INFN) Enrico Nardi (INFN-Laboratori Nazionali di Frascati and HEPC-NICPB, Tallinn) Alberto Salvio (Universita' di Roma Tor Vergata and INFN) +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1.4. Quantum gravity phenomenology in the multi-messenger approach, Rijeka, Croatia --------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/?p=26289 Starting: 2023-07-11 to 2023-07-14 Location: Rijeka, Croatia Additional Information: https://indico.capa.unizar.es/event/31/ Contact: tomislav.terzic[AT]gmail.com COST Action CA18108 (https://qg-mm.unizar.es/) is an initiative funded by the COST Association (https://www.cost.eu/). It is aimed at enabling researchers from different communities of quantum gravity, theoreticians, phenomenologists and gamma-ray, neutrino, cosmic-ray and gravitational-wave experimentalists, to learn about each other's work and cooperate on the goal of developing new strategies for testing candidate quantum gravity theories using multi-messenger high-energy astrophysical observations. This is the fourth Annual Conference and the final event of the CA18108. Attendance will be preferably in person in Rijeka. Important dates: April 30: Early Registration deadline / Deadline for abstract submission May 15: Confirmation of financial support / Confirmation of talk selection May 31: Late Registration deadline (financial support might not be available at this point, depending on the number of early registrants) July 10: Arrival day July 12: Conference Dinner July 13: Outreach event July 15: Departure day Financial support: Participation for COST Action participants can be funded by COST. A first round of COST invitations will be sent in late May. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1.5. 18th Italian-Korean Symposium on Relativistic Astrophysics, Pescara, Italy --------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2023/03/14/18th-italian-korean-symposium... Starting: 2023-06-19 to 2023-06-23 Location: Pescara, Italy Additional Information: https://indico.icranet.org/event/7/ Contact: secretariat[AT]icranet.org Classical and quantum energy extraction process from black holes: the role of the black hole irreducible mass This symposium started in 1987, then continued for every two years alternatively in Korea and Italy with the support from Korea Science and Engineering Foundation (KOSEF), Consiglio Nazionale delle Ricerche (CNR), International Center for Relativistic Astrophysics Network (ICRANet) and hosting institutes. Main purpose of this symposium is to accelerate the exchange between scientists of Italy and Korea, especially young researchers. In addition to the traditional topics of relativistic astrophysics discussed at the IK meetings, particular attention will be given in this IK18 meeting to the energy extraction processes from the Kerr black hole: 1) by fission of massive particles (Penrose process), 2) by classical electrodynamic processes and 3) by quantum processes. In all cases the role of the irreducible mass will be evidenced in characterizing the efficiency of the emission processes. Examples from active galactic nuclei and gamma-ray bursts will be illustrated. Registration fee: 300 euro Speakers include: Lorenzo Amati Bogeun Gwak Imtak Jeon Sang Pyo Kim Wontae Kim Hyeong Chan Kim Bum-Hoon Lee Changhwan Lee Hyungwon Lee Wonwoo Lee Vladimir Lipunov Liang Li Jeong-Hyuck Park Jorge Rueda Rahim Moradi Stefano Scopel Gregory Vereshchagin Yu Wang She-Sheng Xue +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1.6. PWF Latin America - Advanced Lectures on Theoretical Physics: General Relativity and Cosmology (online) --------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/?p=26298 Starting: 2023-06-02 to 2023-09-08 Location: Online Additional Information: https://indico.ictp.it/event/10109/ Contact: pwf[AT]ictp.it General Relativity and Cosmology, will be taught in Spanish online from 2nd June to 8th Sept. 2023 by Daniel Galviz at Yau Mathematical Science Center (Tsinghua University) China, and ICTS (Tata Institute of Fundamental Research) India, and Esteban Chalbaud LIP-Coimbra (University of Coimbra), CERN (ATLAS). Physics students from different universities in Latin America will be trained in general relativity and its applications to cosmology. Every student will receive an ICTP-PWF certificate at the end. The application procedure is now open (the deadline is on 19th May 2023). Goals and deliverables Help students in Latin America by teaching lectures on theoretical physics. Help students to be familiar with advanced research topics in theoretical physics. Students will solve weekly assignments on these topics. Top students without MSc./Ph.D. will be mentored to pursue studies abroad, giving advice and recommendations about scholarships at international programs. Guest Speakers: Prof. Alejandra Castro (DAMTP, University of Cambridge) Prof. Fernando Quevedo (DAMTP, University of Cambridge) Ruben Campos Delgado (BCTP and Uni Bonn, DE) Carolina Cuesta-Lazaro (AIFI (MIT) / CFA (Harvard), USA) Jonathan Lozano (University of Baja California, MX) Judith Perez (IFT UAM-CSIC, ES) Nikolina Sarcevic (Newcastle University, UK) Lecturers: Daniel Galviz at Yau Mathematical Science Center (Tsinghua University) China and ICTS (Tata Institute of Fundamental Research) Esteban Chalbaud LIP-Coimbra (University of Coimbra) and CERN (ATLAS) Project coordinator: Daniel Galviz, YMSC (Tsinghua University) and ICTS (Tata Institute of Fundamental Research) +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1.7. 1st Trieste meeting on the physics of gravitational waves, Trieste, Italy --------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2023/03/15/1st-trieste-meeting-on-the-ph... Starting: 2023-06-05 to 2023-06-09 Location: Trieste, Italy Additional Information: https://indico.sissa.it/event/86/timetable/#20230609 Contact: barausse[AT]sissa.it The observation of gravitational waves from binary black holes and neutron stars by the LIGO-Virgo scientific collaboration heralds a new era in astrophysics, in which gravitational radiation will probe the universe in a new and complementary way to traditional telescopes. With several new detectors coming online soon, such as LISA, ET and Cosmic Explorer, these detections are just the beginning of an exciting scientific journey that will unravel the nature of the most mysterious objects of our Universe, black holes. One of the main scientific targets of new detectors are supermassive black holes, which are typically present in galactic centers and surrounded by astrophysical environments involving accretion disks, dark matter, stars, and other smaller black holes. In order to fulfill the ambitious goals of gravitational-wave astronomy it is crucial to assess how these environments affect the gravitational-wave signal of a binary coalescence. The 1st Trieste meeting on environmental effects on binary black holes will bring together experts on astrophysical and waveform modelling, and gravitational-wave data analysis to try to answer questions like: - What is the bias we incur if environmental effects are not properly modeled? Can they compromise tests of GR and the nature of compact objects? - What are the limitations of current models for environmental effects and what are the best strategies to improve them? - How do we efficiently include these effects in the state-of-the-art waveform models? - With what precision will we be able to constrain the properties of astrophysical environments with future detections? The meeting will be held at SISSA in Trieste (Italy) from June 7-9, 2023 and will be preceded by the mid-term meeting of the H2020-MSCA-RISE Network Gravitational Universe: Challenges and Opportunities (June 5-6). On the non-scientific side, Trieste is a vibrant multicultural city facing the charming azure of the Adriatic sea, with a rich history and plenty of leisure and cultural activities. It is particularly enjoyable in late spring. Note that the number of registrations may be capped due to room capacity. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1.8. Asymmetric Binaries meet Fundamental Astro-Physics, L'Aquila, Italy --------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/?p=26300 Starting: 2023-09-20 to 2023-09-22 Location: L'Aquila, Italy Additional Information: https://indico.gssi.it/event/494/ Contact: andrea.maselli[AT]gssi.it Gravitational wave observations of binary mergers are carrying a new revolution in astrophysics. While signals detected by ground based detectors have already shed light on the most violent among astrophysical events, next generation of interferometers like LISA will allow to witness the evolution of new families of sources, as asymmetric binaries, which harbour a unique potential for the identification of new fundamental fields and particles. The workshop "Asymmetric Binaries Meet Fundamental Astro-Physics" builds around 5 topics connected to these compact sources: self-force methods, beyond GR modelling, Exotic Compact Objects, environmental effects, astrophysics and data analysis approaches. The goal of the meeting is to discuss the most recent advances in these topics and their relevance to probe astrophysical and fundamental physics scenarios. We aim to foster multidisciplinarity among the various themes. The workshop will be held at the Gran Sasso Science Institute in L'Aquila, from September 20-22, 2023. L'Aquila lives in a beautiful environment surrounded by the highest peaks of the Apennine Mountains of Italy. The city is home to art, history, and great food. Invited Speakers Enrico Barausse (SISSA) Christopher Berry* (University of Glasgow) Susanna Barsanti (Sapienza University) Beatrice Bonga (Radboud University) Richard Brito (IST) Vitor Cardoso (Niels Bohr Institute) Alvin Chua* (University of Singapore) Giulia Cusin* (IAP) Leanne Durkan (University College Dublin) Elisa Maggio (AEI) N.K. Krishnendu (ICTS) Paolo Pani (Sapienza University) Laura Sberna (AEI) Pau Amaro Seoane (University of Valencia) Thomas Sotiriou (Nottingham University) Lorenzo Speri (AEI) Andrew Spiers (Nottingham University) Takahiro Tanaka* (Kyoto University) Maarten van de Meent (AEI) Niels Warburton (University College Dublin) Nico Yunes (University of Illinois) Register Now! Organizing Committee Leonardo Gualtieri, Andrea Maselli, Adam Pound +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1.9. Geometric Foundations of Gravity 2023, Tartu, Estonia --------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2023/03/16/geometric-foundations-of-grav... Starting: 2023-06-19 to 2023-06-22 Location: Tartu, Estonia Additional Information: http://geomgrav.fi.ut.ee/conf/geomgrav2023/ Contact: geomgrav[AT]ut.ee Geometric Foundations of Gravity 2023 is a conference dedicated to the geometric foundations of gravity theories that will take place on June 19 - June 22, 2023 in Tartu, Estonia. This conference is a continuation of a series of earlier conferences and workshops on the same subject. The theories under discussion include for instance: - Extensions of General Relativity (metric affine gravity, Poincare gauge gravity, scalar/vector/tensor gravity, teleparallel gravity, massive gravity, bi-metric gravity, ...) - Astrophysics in Extended Gravity (black holes, ordinary/neutron/boson/grava stars, gravitational waves, strings, wormholes, binary systems, ...) - Cosmology in Extended Gravity (dynamical system analysis, observations and constraints, dark energy, dark matter, inflation, early universe, galaxies, ...) - Beyond Lorentzian Geometry in Classical and Quantum Gravity (doubly/deformed relativity, standard model extension, Hamilton geometry, Finsler geometry, ...). An up to date list of invited speakers, the registration procedure, participants and all further details can be found on http://geomgrav.fi.ut.ee/conf/geomgrav2023/ The conference is organized by the gravity research group at the Laboratory of Theoretical Physics, Institute of Physics, University of Tartu and collaborators. Sebastian Bahamonde Daniel Blixt Jorge Gigante Valcarcel Maria Jose Guzman Manuel Hohmann Damianos Iosifidis Laur Jarv Alejandro Jimenez Cano Tomi Koivisto Christian Pfeifer Margus Saal Francisco Jose Maldonado Torralba Aneta Wojna +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1.10. Workshop on gravity and quantum field theory, Montevideo, Uruguay --------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2023/03/22/workshop-on-gravity-and-quant... Starting: 2023-05-15 to 2023-05-17 Location: Montevideo, Uruguay Additional Information: http://www.fisica.edu.uy Contact: campi[AT]fisica.edu.uy Dear Colleagues, We would like to invite you to the Montevideo Workshop on Quantum Field Theory and Gravity, to take place in Montevideo, Uruguay between May 15th and 17th 2023. The workshop aims to bring together researchers and students in these topics from the region as well as colleagues from farther away. The event will consist of research talks and discussion sessions. Confirmed Participants Include Sergei Dubovsky Rodolfo Gambini Rafael Porto Jorge Pullin Ira Rothstein Gonzalo Torroba If you are interested in participating please do not hesitate to contact us at grqft.mvd.uy[AT]gmail.com. Limited funds are available upon request to cover local expenses. The activities will take place at the Instituto de Fisica of the Facultad de Ingenieria (Julio Herrera y Reissig 565). We would be grateful if you can forward this email to students and colleagues. Sincerely, Organizing Committee Florencia Benitez Miguel Campiglia Guzman Hernandez-Chifflet Marina Maneyro Esteban Mato +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1.11. 1st Australia-New Zealand Student Conference on General Relativity (Online) --------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/?p=26471 Starting: 2023-05-08 to 2023-05-10 Location: (Online) Additional Information: https://www.gravity.ac.nz/rca23/ Contact: elliot.marshall[AT]monash.edu The 2023 Australia-New Zealand Student Conference on General Relativity (8-10 May 2023) is an online event for postgraduate students in General Relativity, Cosmology, and Astrophysics to present their research and meet fellow students working in these areas. The program will involve a mix of short student talks and presentations from invited speakers. Further details and the registration form can be found here: https://www.gravity.ac.nz/rca23/ This conference is supported by Matrix (https://www.matrix-inst.org.au/) and AMSI (https://amsi.org.au/). To support post-symposium research collaboration between PhD student participants, MATRIX- AMSI are providing funding through the MATRIX-AMSI PhD Student Research Collaboration Scheme (https://www.matrix-inst.org.au/phd-student-research-collaboration-scheme-%20...). Invited Speakers: Matthew Bailes Richard Easther Astrid Lamberts Todd Oliynyk Volker Schlue Chris Stevens Organising Committee: Jack Aimer Louie Bernhardt Alex Goodenbour Earl Lester Spencer Magnall Elliot Marshall Petra Tang Salvatore Vultaggio Yourong Frank Wang +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1.12. Gravity 2023: Dawn of field theoretic approach, Kyoto, Japan --------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/?p=26501 Starting: 2023-07-18 to 2023-07-20 Location: Kyoto, Japan Additional Information: https://sites.google.com/view/gravity2023/home Contact: gravity2023[AT]yukawa.kyoto-u.ac.jp The international workshop "Gravity 2023: Dawn of field theoretic approach" will be held from 18 to 20 July 2023 at YITP, Kyoto University. The workshop aims to apply field theory techniques such as effective field theory approaches, scattering amplitude techniques, and bootstrap approaches to understand gravitational systems. We welcome not only those who are already doing related research but also those who wish to learn about these subjects. Important deadlines: Abstract submission, visa support: May 26th In-person participation: June 1st Online participation: July 14th Invited speakers and topics: Yu-tin Huang: scattering amplitudes and UV/IR constraints; Lam Hui: the symmetries of black holes and the EFT for black hole perturbations; Michele Levi: the EFT approach to post-Newtonian gravity; Toshifumi Noumi: quantum gravity and swampland; Enrico Pajer: foundations of cosmological bootstrap; David Stefanyszyn: applications of cosmological bootstrap. Organizers Katsuki Aoki, Antonio De Felice, Francesco Di Filippo, Mohammad Ali Gorji, Shinji Mukohyama, Masroor C. Pookkillath, Kazufumi Takahashi +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1.13. Infinity on a Gridshell, Copenhagen, Denmark --------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2023/03/29/infinity-on-a-gridshell/ Starting: 2023-07-10 to 2023-07-13 Location: Copenhagen, Denmark Additional Information: https://hyperboloid.al/event/copenhagen-23/ Contact: david.hilditch[AT]tecnico.ulisboa.pt We are excited to announce the upcoming workshop "Infinity on a Gridshell," which will take place from July 10 to July 13, 2023, at the Niels Bohr Institute, University of Copenhagen. The workshop will focus on the progress made in hyperboloidal methods, which have emerged as a crucial tool in black-hole perturbation theory and other diverse applications. The workshop aims to bring together leading experts to review and summarize the current state-of-the-art of hyperboloidal methods in a wide range of applications, including the computation of wave equations, quasi-normal modes, effective-one-body formalism, and self-force. The focus will be on exploring ideas to solve the full Einstein equations for astrophysically relevant scenarios. We have a limited number of seats for researchers to attend the conference in person. Participants will have the opportunity to present their work using hyperboloidal methods, exchange ideas, and discuss the challenges and opportunities in the field. We aim to foster new collaborations and build a community of researchers to connect and engage in productive discussions. We encourage researchers and graduate students with an interest in hyperboloidal methods to apply for this exciting event. The workshop will provide an excellent opportunity to learn about the latest developments, contribute to the advancement of the field, and to join the hyperboloidal community. For more information about the workshop, please visit our website (https://hyperboloid.al/event/copenhagen-23/). You can apply to participate by filling the form at the strong GR website (https://strong-gr.com/infinity-on-a-grid-shell/registration/) before the deadline April 30, 2023. We look forward to welcoming you to Copenhagen. Scientific Organizing Committee: David Hilditch, Rodrigo Panosso Macedo, Alex Vano-Vinuales, and Anil Zenginoglu Local Organizing Committee: Vitor Cardoso, Rodrigo Panosso Macedo, Julie de Molade, Rita Sousa +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1.14. XXV SIGRAV Conference on General Relativity and Gravitation, Trieste, Italy --------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2023/03/30/xxv-sigrav-conference-on-gene... Starting: 2023-09-04 to 2023-09-08 Location: Trieste, Italy Additional Information: https://indico.sissa.it/event/96/ Contact: sigrav-xxv[AT]sissa.it The Italian Society of General Relativity and Gravitation announces the XXV SIGRAV Conference, to be held in Trieste, Italy from the 4th to 8th of September 2023. The conference will be hosted in the Miramare SISSA Building close to the sea. The aim of the conference is to discuss aspects of Classical and Quantum Gravity, including General Relativity tests, Cosmology, Gravity experiments and Gravitational Waves from the experimental, theoretical and data analysis points of view. The ceremony of the Amaldi medal and that of the SIGRAV award for young scientists will be held during the conference. The conference is devoted to all aspects of gravitational physics, with special regard towards new developments in theory, experiments and their interplay. The congress will provide plenary lectures and parallel sessions devoted to topical studies. Additional satellite events will include the award of the Amaldi Medal to two European scientists, who distinguished themselves in gravitational physics and the SIGRAV prize for young researchers, who carried out studies of particular interest in the field. Plenary speakers: Agnese Bissi Vitor Cardoso Piotr Chrusciel Martina De Laurentis Eiichiro Komatsu Ruth Lazkoz David Lucchesi Michela Mapelli Michele Punturo Luciano Rezzolla Simone Speziale Nicola Vittorio +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1.15. Women in Mathematical Relativity (online) --------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/?p=26537 Starting: 2023-04-14 to 2023-04-14 Location: Online Additional Information: https://mpim.is/wmr Contact: wmr[AT]math.uni-leipzig.de Dear colleagues, We are excited to announce the upcoming online workshop Women in Mathematical Relativity on the 14th of April 2023. There will be five talks of 25 mins each, addressed at undergraduate and graduate students, followed by a podium discussion on Support mechanisms for women interested in research careers in Mathematics. We would be grateful if you could generously forward and advertise this event to anyone who might be interested. Female students are especially encouraged to participate. Moreover, we encourage the local organization of in-person group viewings of the Zoom stream, as a platform for subsequent conversations and involvement. The schedule, poster, zoom link, and abstracts of the talks can be found on the workshop website (link attached to this announcement). Best wishes, The organizers Stefan Czimek (Uni Leipzig) Dejan Gajic (Uni Leipzig) Annalaura Stingo (Ecole polytechnique) +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ============================================== 2. Jobs ============================================== 2.1. ESA Archival Research Visitor Programme, Madrid (Spain) and Noordwijk (Netherlands) ------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/?p=26254 Deadline: 2023-04-30 Location: Madrid (Spain) or Noordwijk( Netherlands) Additional Information: https://www.cosmos.esa.int/web/esdc/visitor-programme Contact: arvp[AT]cosmos.esa.int To increase the scientific return from its space science missions, the European Space Agency (ESA) welcomes applications from scientists interested in pursuing research projects based on data publicly available in the ESA Space Science Archives (https://www.cosmos.esa.int/web/esdc). The ESA Archival Research Visitor Programme is open to scientists, at all career levels, affiliated with institutes in ESA Member States and Collaborating States. Early-career scientists (within 10 years of the PhD) are particularly encouraged to apply. Applications by PhD students are also welcome. During their stay, visiting scientists will have access to archives and mission specialists for help with the retrieval, calibration, and analysis of archival data. In principle, all areas of space research covered by ESA science missions can be supported. Residence lasts typically between one and three months, also distributed over multiple visits. Research projects can be carried out at ESAC (Madrid, Spain) and at ESTEC (Noordwijk, Netherlands). To offset the expenses incurred by visitors, ESA covers travel costs from and to the home institution and provides support for lodging expenses and meals. Applications received before 1 May 2023 will be considered for visits in autumn 2023 and winter 2024. For further details, including areas of research and contact information, please refer to: https://www.cosmos.esa.int/web/esdc/visitor-programme or write to the programme coordinators at arvp [at] cosmos.esa.int +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2.2. Assistant/Associate Professor position, Birmingham, UK ------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/?p=26290 Deadline: 2023-04-12 Location: Birmingham, UK Additional Information: https://www.birmingham.ac.uk/jobs Contact: A.Vecchio[AT]bham.ac.uk The Institute for Gravitational Wave Astronomy and the School of Physics and Astronomy at the University of Birmingham invite applications for a faculty position in astrophysics at the Assistant/Associate Professor level. The focus of this position is in the area of gravitational-wave astronomy. The Institute provides a vibrant and diverse research environment with expertise across many areas of physics and astronomy: from theoretical to experimental gravitational-wave research with applications to present and future detectors, theoretical astrophysics, data analysis, transient astronomy, gravitational-wave source modelling including numerical relativity, and theoretical general relativity.  Institute members play important roles in the LIGO Scientific Collaboration - including the development of next-generation ground-based gravitational-wave observatories - the LISA Consortium, the European and International Pulsar Timing Array collaborations, and in surveys such as ENGRAVE, STARGATE and LSST. The Institute has excellent laboratory and computer facilities. Current institute faculty members include Alberto Vecchio, Clement Bonnerot, Ben Gompertz, Denis Martynov, Sean McGee, Christopher Moore, Geraint Pratten, Patricia Schmidt, and Teng Zhang. The University of Birmingham welcomes applications from all sections of the community and is open to discussions around all forms of flexible working. The University is committed to excellence in diversity and the creation of an inclusive learning and working environment. Applicants should apply through the University's job portal (external link) using job reference 101219 for the position at the assistant professor level, or job reference 59918 for the position at the associate professor level. As part of their application, applicants should include: (i) a CV, including full publication list, (ii) a statement of future research plans and objectives (max 3 pages), (iii) a statement on teaching experience (max 2 pages). The deadline for application is 12th April 2023. Applicants should also arrange for 3 reference letters to be sent to the group secretary, Ms Joanne Cox at j.s.cox[AT]bham.ac.uk by 12th April 2023. For further information and informal inquiries please contact Prof Alberto Vecchio (A.Vecchio[AT]bham.ac.uk), Dr Christopher Moore (C.J.Moore[AT]bham.ac.uk), Dr Geraint Pratten (G.Pratten[AT]bham.ac.uk) or Dr Patricia Schmidt (P.Schmidt[AT]bham.ac.uk). Interviews are expected to take place during the week 22nd-26th May, 2023. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2.3. SISSA for Women in Physics, Trieste, Italy ------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2023/03/22/sissa-for-women-in-physics/ Deadline: 2023-05-19 Location: Trieste, Italy Additional Information: https://academicjobsonline.org/ajo/jobs/24553 Contact: barausse[AT]sissa.it The Physics Area at the "Scuola Internazionale Superiore di Studi Avanzati" (SISSA) in Trieste, Italy, invites expressions of interest for a faculty position from outstanding female candidates with a strong research record in any of the fields covered by the Area (Astrophysics and Cosmology, Astroparticle Physics, Condensed Matter Physics, Statistical Physics, Statistical Physics of Biological Systems, Theoretical and Scientific Data Science, Theoretical Particle Physics). The appointment procedure will be activated at the assistant professor, tenure-track, level*. The successful candidate is expected to work as an independent principal investigator, promoting and leading research activities to complement the current expertise of the present SISSA groups, as well as to attract external funds, take an active part in the SISSA PhD teaching programme, and supervise graduate students (selected on a competitive basis and funded by bursaries provided by SISSA). Expressions of interest should be sent (in English and via Academic Jobs Online only) preferably by May 19, 2023. They should include: 1. Curriculum Vitae and the names of at least three referees. 2. Description of current research interests. 3. List of ten publications of greatest interest for the selection. The International School for Advanced Studies (SISSA) is a leading research and training institution (PhD School) located in Trieste, Italy. The campus is in a green area on the hills close to Trieste and is efficiently connected to the city by public transport. SISSA offers to its community top tier research facilities (e.g. High Performance Computing facilities) and services (canteen and kindergarten services located on site). The Physics Area at SISSA has connections with the International Centre for Theoretical Physics (ICTP), the National Institute for Nuclear Physics (INFN), the National Institute for Astrophysics (INAF) and the National Council for Research (CNR). SISSA is also a founding member of several research Institutes such as IFPU, iGAP and TQT. More information on research in Physics at SISSA can be found here: Physics Area. *In the Italian system, a tenure-track position corresponds to a "ricercatore TD b", i.e. an assistant professor to be confirmed (on the sole basis of her/his results) as a tenured associate professor within three years after appointment. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2.4. PhD positions in gravitational-wave astronomy, Milan, Italy ------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2023/03/23/phd-positions-in-gravitationa... Deadline: 2023-04-19 Location: Milano, Italy Additional Information: https://en.unimib.it/education/postgraduates/doctoral-research-phd-programme... Contact: davide.gerosa[AT]unimib.it The University of Milano-Bicocca welcomes applications for PhD scholarships. The application deadline is April 19th, 2023 for positions starting in the Fall of 2023: https://en.unimib.it/education/postgraduates/doctoral-research-phd-programme... In particular, the theoretical astrophysics group is looking for highly motivated candidates to join our activities in black-hole binary dynamics, gravitational-wave data exploitation, and numerical relativity. Faculty members with matching interests include Gerosa, Sesana, Colpi, Dotti, and Giacomazzo. Candidates will have ample opportunities to work with and visit external collaborators as well. Our PhD admission program includes a number of "open" scholarships, covering all research activities in the department (including ours!). All candidates are considered for those by default. In addition, our group this year is advertising an additional "project" scholarship titled "Gravitational-wave source modeling" and supervised by Gerosa. Candidates wishing to be considered for this additional opportunity should indicate it explicitly when applying (the number of this position FIS.3). We strive to build an inclusive group and welcome applications from all interested candidates. More information on the astrophysics group at Bicocca can be found at astro.fisica.unimib.it. For informal inquiries please do not hesitate to contact davide.gerosa[AT]unimib.it +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2.5. Lecturer in gravity, Southampton, UK ------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/?p=26509 Deadline: 2023-05-01 Location: Southampton, United Kingdom Additional Information: https://jobs.soton.ac.uk/Vacancy.aspx?id=37361 Contact: N.A.Andersson[AT]southampton.ac.uk The Gravity Group at the University of Southampton's School of Mathematical Sciences is inviting applications for a permanent-track faculty position. The ideal candidate will have a track record of excellent research and the potential to lead research at an international level in the areas of gravitational-wave data analysis, preferably including aspects of artificial intelligence and machine learning. Consideration will also be given to exceptional candidates working in other areas compatible with the existing research interests of the Gravity Group. The Gravity Group offers a welcoming, stimulating and active research environment, mainly focused on aspects of gravitational-wave astronomy and gravitational-wave source modelling. The Group is actively involved in the LISA Consortium, the LIGO Scientific Collaboration, and the ET Observational Science Board. Current members include Nils Andersson, Leor Barack, Carsten Gundlach, Ian Hawke, Ian Jones, Adam Pound, and Andreas Schmitt. The Gravity Group also has close ties to the Southampton String Theory Group, and both groups form parts of the Southampton Theory Astrophysics and Gravity (STAG) Research Centre https://www.southampton.ac.uk/stag . Further information about the School of Mathematical Sciences at Southampton can be found at http://www.soton.ac.uk/maths/ Informal enquiries can be made at any time to Head of the Applied Mathematics and Theoretical Physics Division, Prof Nils Andersson, N.A.Andersson[AT]southampton.ac.uk. The application deadline is midnight on the closing date stated above. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2.6. Scientific software developers in gravitational wave physics, Palma, Spain ------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2023/03/30/scientific-software-developer... Deadline: 2023-04-24 Location: Palma de Mallorca, Spain Additional Information: https://investigacio.uib.eu/Contractacio/Convocatories-vigents Contact: sascha.husa[AT]uib.es For this call we are looking for two highly motivated scientific software developers/research software engineers who will actively engage in the computational research activities carried out in the gravitational physics group. The successful candidates will support our research in gravitational wave data analysis and numerical relativity and will be involved in our contributions to the LIGO Scientific Collaboration, the Einstein Telescope and the LISA Consortium. Research in the group spans a wide range of topics, including gravitational wave data analysis, waveform modelling and numerical relativity. Computing is carried out using an in-house high-performance computer cluster, and external resources such as the Mare Nostrum supercomputer or the LIGO data grid. The group comprises PIs Alicia Sintes and Sascha Husa and faculty members David Keitel and Jaume Carot, as well as several postdoctoral researchers and PhD students, and it is involved in the LIGO Scientific Collaboration, the LISA Consortium and the Einstein Telescope project. For further details see http://grg.uib.es. The initial contract will be for 2 years (01.06.2023- 31.05.2025). The contract may be extended until 30.09.2026 depending on performance and funding. Monthly Salary will be EUR 2995. Minimal requirement will be a bachelor's degree or equivalent in computer science, astronomy, physics or a related discipline, with software developing experience. Requirements: * Experience in using high-performance computing (HPC) or high-throughput computing (HTC) resources. * Expert knowledge in computational languages used in the physics and astrophysics community (e.g. Python, C/C++, Mathematica). * Experience in using Unix/Linux and macOS. * Excellent oral and written communication skills in English. Preference will be given to candidates with: * A background in gravitational-wave physics or astrophysics. * Familiarity with gravitational-wave software. * A PhD in Informatics, Astronomy, Physics or related fields (not a requirement). * Familiarity with modern software development practices, such as version control (Git) and continuous integration (CI). * Knowledge of machine-learning methods. * Experience in numerical solutions of ordinary and partial differential equations. Key tasks/responsibilities: * Support the development and maintenance of software packages used to generate waveform models, and used for statistical inference of the properties of observed gravitational-wave signals. * Performance optimisation and documentation of scientific software. * Consult and train scientists in the use of software. * Support research and publications conducted by scientists in the group. * Visualisation of results. The starting day for the contract may be negotiated, but a starting date 1.06.2023 is preferred. The deadline for applications is April 24th 2023. Application procedure: * Candidates will need to apply through the human resources management at UIB. Instructions for the application process can be found at https://investigacio.uib.eu/Contractacio/Convocatories-vigents. The call reference number and job description are 2022-23_6_53 Scientific software developer in gravitational wave physics at the University of the Balearic Islands. * Applications should be submitted via the Researcher Portal at the University of the Balearic Islands https://ppi.uib.eu/ by filling the relevant application form and uploading all required documents (CV, Passport, academic records, certificates, and any other supporting documents of the CV). When filling the form, non-Spanish applicants need to click the box authorising "a duly authorised civil servant at the University of the Balearic Islands to register all the documentation requested" in the call for applications. The resulting PDF file of the form, together with the required supporting documents, should then be emailed to forhu.contractacio[AT]uib.cat * For questions or help with the application process please contact alicia.sintes[AT]uib.es and sascha.husa[AT]uib.es. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2.7. Lecturers in Physics (Astronomy/Astrophysics) London, UK ------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/?p=26534 Deadline: 2023-04-30 Location: London, UK Additional Information: https://jobs.royalholloway.ac.uk/vacancy.aspx?ref=0323-121 Contact: Stephen.Gibson[AT]rhul.ac.uk The School of Engineering, Physical and Mathematical Sciences (EPMS) at Royal Holloway, University of London, comprises the Departments of Electronic Engineering, Computer Science, Information Security, Mathematics and Physics. We are pleased to announce that the School is embarking on an ambitious period of expansion in data science, artificial intelligence, computing, information security, digital engineering and physical science. The Department of Physics has a record of outstanding research and hosts established research groups in dark matter searches and quantum technologies for fundamental physics, which bring together research groupings across particle physics, theoretical physics, nanotechnologies and ultra-low temperature physics, and have recently initiated a new research group in Gravitational Waves. We are seeking to appoint two lecturers in astronomy/astrophysics and particularly welcome applications from those with an interest in applying artificial intelligence tools to astronomy/astrophysics to establish new scientific directions in our research programme. Applicants should either have, or have the potential for producing, high quality publications and attracting significant research funding. Applicants will have a track record demonstrated excellence, or will show the potential for excellence, in delivering undergraduate and postgraduate teaching and the supervision of both undergraduate and postgraduate students. The Department of Physics is committed to reducing gender inequality, as recognised by the award of Athena SWAN silver status and the renewal of Physics Juno Champion status in 2022, and strongly welcome applications from groups under-represented in academic posts. For an informal discussion about the post, please contact the Head of Department, Professor Stephen Gibson Stephen.Gibson[AT]rhul.ac.uk. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2.8. Three postdoc positions in theoretical gravitational physics, Prague, Czechia ------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2023/03/31/three-postdoc-positions-in-th... Deadline: 2023-05-15 Location: Prague, Czechia Additional Information: https://cuni.cz/UKEN-1573.html?pracid=202303-PD-MFF-UTF-002, https://cuni.cz/UKEN-1573.html?pracid=202303-PD-MFF-UTF-003, https://cuni.cz/UKEN-1573.html?pracid=202303-PD-MFF-UTF-004 Contact: positions[AT]matfyz.cuni.cz Three similar yet different postdoc positions in theoretical gravitational physics are offered at Institute of Theoretical Physics, Faculty of Mathematics and Physics, Charles University in Prague: 1) "Generic" position in GR group of the Institute, for which applicant's expertise should be close to one of the following topics: mathematical relativity, exact solutions of Einstein's field equations and their interpretation, global structure of space-times, hidden symmetries, black holes, higher and lower dimensional gravity, quantum effects in the presence of gravity. 2) Position in the project supervised by David Kubiznak, for which applicant's expertise should ideally include (but is not limited to) "black hole chemistry" and its holographic interpretation, quantum information aspects of space-times, modified theories of gravity, or purely classical investigations of mathematical properties of black holes and their hidden symmetries. 3) Position in the project supervised by Ivan Kolar and aimed to study gravitational theories and scalar field theories (in the presence of gravity) that contain higher derivatives of finite or infinite order (non-local theories). Conditions (applying to all three positions): expected start date: 1st September 2023 (negotiable) term contract: 2 years Requirements, documents: PhD in the field (completed before signing the employment contract) structured CV list of publication activity list of citation response two letters of recommendation motivation letter If interested, you are encouraged to apply for all three positions; in such a case, it is necessary to apply for each position separately. Please, see the attached links for details. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2.9. ERC-funded postdoc positions in Relativistic Theoretical Astrophysics, Frankfurt, Germany ------------------------------------------------------------- Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2023/04/01/erc-funded-postdoc-positions-... Deadline: 2023-06-15 Location: Frankfurt, Germany Additional Information: https://relastro.uni-frankfurt.de Contact: steidl[AT]itp.uni-frankfurt.de The group of Relativistic Theoretical Astrophysics in Frankfurt invites applications for two more postdoctoral positions in Relativistic Theoretical Astrophysics. The positions are funded by the ERC Advanced Grant "JETSET" and will be part of a large-scale, long-term effort to study the dynamics of relativistic jets on different scales and physical regimes. Candidates should have a PhD in astrophysics, physics or applied mathematics. Knowledge and experience in modelling - either analytically or numerically - the electrodynamics of black holes and the the properties of magnetised plasma are seen as prerequisites. The successful applicants will be part of an international research group at the Institute for Theoretical Physics at Frankfurt, Germany. Interests of the group span from the modelling of the physics of neutron stars and black holes, to fundamental issues in gravitational physics (https://relastro.uni-frankfurt.de/). Frankfurt am Main is a lively and international city, and Europe's financial center. The application should comprise a CV, a publication list, and a research summary and proposal (4 pages max). Applicants should also arrange for three letters of reference to be sent to the address below. Applications will have to be sent by 15.06.2023 for full consideration, but the search will remain open till the optimal candidate(s) is found. The position is initially for two years and can be extended - depending on successful performance and availability of funds. The expected starting date is 01.09.2021, but earlier or later appointments can be negotiated. Applications should be made electronically and sent to: Fr. Astrid Steidl: steidl[AT]itp.uni-frankfurt.de and to CC-ed to rezzolla[AT]itp.uni-frankfurt.de Goethe University is an equal-opportunity employer and is committed to increasing the number of women in research and teaching. Qualified female researchers are therefore especially encouraged to apply. Severely handicapped applicants with equal qualification and aptitude will be given preferential consideration. We prioritise diversity and are committed to creating an inclusive environment for everyone. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ============================================== 3. News ============================================== 3.1. Invitation to join a research project on the very nature of gravitation ------------------------------------------------------------ Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2023/03/22/invitation-to-join-a-research... Additional Information: http://www.minkowskiinstitute.org/old/gravitation.html Minkowski Institute is inviting colleagues who are interested in joining (as affiliated members of the Institute) its most ambitious research project - to examine rigorously whether gravitational phenomena are noting more than manifestations of the non-Euclidean geometry of spacetime, which would mean that gravitation is not a physical interaction. This project follows strictly Minkowski's program of geometrizing Physics - after discovering the spacetime structure of the world (all physical objects are, in reality, a forever given web of worldlines in spacetime), Minkowski summarized this program: "The whole world presents itself as resolved into such worldlines, and I want to say in advance, that in my understanding the laws of physics can find their most complete expression as interrelations between these worldlines." Colleagues who join the project will take part in analyzing the mathematical structure of general relativity with the explicit intention to derive, following Minkowski's program, all predictions of general relativity by regarding gravitational phenomena as effects of the non-Euclidean geometry of spacetime, without assuming that gravitation is a physical interaction (i.e., without assuming the existence of gravitational energy and momentum). In 1921 Eddington mentioned the possibility that gravitation might not be a physical interaction almost explicitly - "gravitation as a separate agency becomes unnecessary" [A. S. Eddington, The Relativity of Time, Nature 106, 802-804 (17 February 1921)]. The main theme of the Third Hermann Minkowski Meeting on the Foundations of Spacetime Physics this year (https://minkowskiinstitute.org/meetings/2023/) will be the nature of gravitation - whether it is merely spacetime geometry or it is a physical interaction. If interested, contact us at mi@minkowskiinstitute.org or at vpetkov@minkowskiinstitute.org. Vesselin Petkov Minkowski Institute http://www.minkowskiinstitute.org/old/ (the new site of the Minkowski Institute is under construction): http://www.minkowskiinstitute.org http://www.minkowskiinstitute.org/old/research.html (footnote 2) Montreal, Canada http://spacetimecentre.org/vpetkov/ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 3.2. Living Reviews: Astrophysics with the LISA / Dynamical boson stars ------------------------------------------------------------ Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2023/03/23/living-reviews-astrophysics-w... Additional Information: https://www.springer.com/journal/41114 The open-access journal Living Reviews in Relativity has published two new review articles in March 2023: Amaro-Seoane, P., Andrews, J., Arca Sedda, M. et al. Astrophysics with the Laser Interferometer Space Antenna. Living Rev Relativ 26, 2 (2023). https://doi.org/10.1007/s41114-022-00041-y Summary: The Laser Interferometer Space Antenna (LISA) will be a transformative experiment for gravitational wave astronomy, and, as such, it will offer unique opportunities to address many key astrophysical questions in a completely novel way. The current knowledge in three main source classes for LISA is reviewed; ultra-compact stellar-mass binaries, massive black hole binaries, and extreme or intermediate mass ratio inspirals. The relevant astrophysical processes and the established modeling techniques are summarized. Likewise, open issues and gaps in our understanding of these sources are highlighted, along with an indication of how LISA could help making progress in the different areas. Note: This article is part of a new joint Topical Collection between Living Reviews and the journal General Relativity and Gravitation (https://link.springer.com/collections/bhdbjdhdhg). Liebling, S.L., Palenzuela, C. Dynamical boson stars. Living Rev Relativ 26, 1 (2023). https://doi.org/10.1007/s41114-023-00043-4 Summary: (Major revision, updates and expands the 2017 version.) The idea of stable, localized bundles of energy has strong appeal as a model for particles. In the 1950s, John Wheeler envisioned such bundles as smooth configurations of electromagnetic energy that he called geons, but none were found. Instead, particle-like solutions were found in the late 1960s with the addition of a scalar field, and these were given the name boson stars. Since then, boson stars find use in a wide variety of models as sources of dark matter, as black hole mimickers, in simple models of binary systems, and as a tool in finding black holes in higher dimensions with only a single Killing vector. We discuss important varieties of boson stars, their dynamic properties, and some of their uses, concentrating on recent efforts. ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 3.3. Nominations for the 2023 Karl Schwarzschild Prize ------------------------------------------------------------ Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2023/03/31/nominations-for-the-2023-karl... Additional Information: https://foerderverein-physik-wgg.de Nominations are invited for the 2023 Karl Schwarzschild Prize, awarded by the Walter Greiner-Society for Fundamental Physics Research in Frankfurt, to honour the memory of Karl Schwarzschild, who studied in Frankfurt at the beginning of his career. This award amounts to 10,000 EUR and recognizes outstanding contributions in gravitational physics and astrophysics, including the technological aspects. Any scientist who has provided important contributions is eligible for the award. Nominations should be sent electronically to Prof. Dr. Juergen Struckmeier, Chair of the Karl Schwarzschild Award Selection Committee, at this address: struckmeier[AT]fias.uni-frankfurt.de The nomination should include: - a Laudatio summarising the reasons for the nomination (2 pages max) - a CV of the nominee - a list of publications over the last 10 years. Self-nominations will not be accepted. The deadline for nominations is 1 June 2023. Juergen Struckmeier, Chair, Karl Schwarzschild Award Selection Committee ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 3.4. Fifth Zeldovich meeting: third announcement ------------------------------------------------------------ Announcement on Hyperspace@GU: https://hyperspace.uni-frankfurt.de/2023/03/31/fifth-zeldovich-meeting-third... Additional Information: http://www.icranet.org/zeldovich5 We are happy to inform that the list of confirmed invited talks now includes: "Fermionic dark matter: theory and phenomenology" by Carlos Raul Arguelles, Universidad Nacional de La Plata, Argentina "Hubble Tension challenge in the modern cosmology: possible solutions" by Gennady Bisnovatyi-Kogan, Space Research Institute (IKI), Russia "Pair-balance model for relativistic shocks and its application to astrophysical sources" by Evgeny Derishev, Institute of Applied Physics, Russia "Quantum sensing - the key technology for further gravitational experiments in space" by Hansjoerg Dittus, University of Bremen, Germany "Neutrino Telescope Baikal-GVD: Status and Nearest Future" by Zhan-Arys Dzhilkibaev, Institute for Nuclear Research of the Russian Academy of Sciences, Russia "SRG/eROSITA all-sky survey: from solar flares and neutrino sources to cosmology" by Marat Gilfanov, Max-Planck Institute for Astrophysics, Germany and IKI, Russia "Neutron Stars as Strong Field QED Laboratory" by Sang Pyo Kim, Kunsan National University, South Korea "New quantum technologies and gravity" by Claus Laemmerzahl, University Bremen, Germany "Discoveries from FAST" by Di Li, National Astronomical Observatories of China, China "Black hole induced star formation in the early universe" by Felix Mirabel, CEA Saclay, France "Selected Studies of Cosmic and Gamma Rays with the MAGIC telescopes" by Razmik Mirzoyan, Max-Planck-Institute for Physics, Germany "Influence of a plasma on the shadow of black holes" by Volker Perlick, ZARM, University Bremen, Germany "An electrodynamic process to extract the rotational energy of a Kerr black hole" by Jorge Armando Rueda Hernandez, ICRANet, Italy "The Imaging X-ray Polarimetry Explorer (IXPE) results from the first 1.5 years of observation" by Paolo Soffitta, IAPS, INAF, Rome, Italy "New developments in the inflationary scenario" by Alexei Starobinsky, Landau Institute for Theoretical Physics, Russia "The spectral signatures of BHs versus NSs" by Lev Titarchuk, University di Ferrara, Italy and Astro Space Center, Lebedev Physical Institute, Russia "Highlights of the Insight-HXMT X-ray Astronomy Satellite" by Shuang-Nan Zhang, Institute of High Energy Physics, China The early bird registration fee is 300 euro (100 euro for students) and it ends up on 1 of May 2023. Starting from that date the registration fee will be 400 euro (150 euro for students). The poster of the meeting: https://indico.icranet.org/event/6/attachments/382/560/poster.pdf The website of the meeting: http://www.icranet.org/zeldovich5 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++