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IAU Symposium 398: Compact Objects and Binaries in Dense Stellar Systems, June 16-20, 2025, Seoul

Cluster dynamics and the evolution of single and binary stars are closely intertwined, leading to different scenarios than those in the galactic field. Star clusters serve as dynamic factories for all these intriguing objects, and these topics are inherently interconnected. This symposium is intended to discuss the astrophysical origin of gravitational waves and to establish connections between theoretical and observational data concerning dynamics, populations, binaries, multiples, and compact objects (including binaries containing them) in dense star clusters. 2025 will be an excellent time to delve into the topic of star clusters and the roles of compact objects as it aligns with the release of significant results from the fourth observing run of LIGO/Virgo/KAGRA, which should provide crucial new constraints on the formation of gravitational wave sources. Additionally, numerous new discoveries of globular cluster pulsars are expected from large radio facilities such as MeerKAT, ASKAP, FAST, and others. New computer codes for dynamical simulations of dense star clusters are also emerging, and this symposium offers an excellent opportunity to discuss the latest results based on these codes.

Coordinating Divisions:

  • Division G Stars and Stellar Physics
  • Division D High Energy Phenomena and Fundamental Physics

Other Divisions:

  • Division H Interstellar Matter and Local Universe
  • Division J Galaxies and Cosmology

Scientific Organizing Committee

  • Hyung Mok Lee (Seoul National University) Chair
  • Rainer Spurzem (NAOC, Beijing; Heidelberg Univrsity) Co-Chair
  • Sourav Chatterjee (TIFR, Mumbai)
  • Michiko Fujii (University of Tokyo)
  • Di Li (Tsinghua University)
  • Antonino Milone (Padova University)
  • Fred Rasio (Northwestern University)
  • Anna Lisa Varri (Edinburgh University)

Local Organizing Committee

  • Chunglee Kim (Ewha Womans Univ.) Chair
  • Jongsuk Hong (Korea Astronomy and Space Science Institute)
  • Elahe Khalouei (Seoul National University)
  • Sungsoo S. Kim (Kyunghee University)
  • Joohee Lee (Seoul National University) Secretary

Conference Website

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BritGrav25, April 28-29 2025, University of Birmingham

The 25th BritGrav meeting will be hosted by the Institute for Gravitational Wave Astronomy at the School of Physics and Astronomy at the University of Birmingham. The meeting will be held on Monday April 28 and Tuesday April 29.

The aim of BritGrav is to bring together early-career researchers working on all aspects of gravitational physics, including astrophysics, cosmology, general relativity, quantum gravity, gravitational-wave data analysis and instrumentation.

Following the BritGrav tradition, the meeting will consist of short talks with priority to be given to PhD students and postdocs. Limited funding is available from the IOP Gravitational Physics Group to support travel for PhD students based in the UK and Ireland. You can request travel support as part of your abstract submission or by emailing the organisers if you do not submit an abstract.

At the end of the meeting, a prize for the Best Student Talk, sponsored by the IOP Publishing Group, will be awarded.

Abstract submission deadline: March 16, 2025

Travel support application deadline: March 16, 2025

Registration deadline: April 6, 2025

Important note: Due to size constraints of the venue, the number of participants will be limited to 150.

Local organising committee: Bence Becsy, Alice Bonino, Gregorio Carullo, Joanne Cox, Nicola Holloway, Krishnendu NV, Geraint Pratten, Patricia Schmidt, Alberto Vecchio

For any enquiries, please contact us: britgrav25(at)contacts.bham.ac.uk

Meeting Website

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2nd European AI for Fundamental Physics Conference (EuCAIFCon 2025), June 15-20 2025, Cagliari

The second “European AI for Fundamental Physics Conference” (EuCAIFCon) will be held in Sardinia, from 15 - 20 June 2025. This event aims to provide a platform for establishing new connections between AI activities across various branches of fundamental physics, by bringing together researchers that face similar challenges and/or use similar AI solutions. The conference will be organized “horizontally”: sessions are centered on specific AI methods and themes, while being cross-disciplinary regarding the scientific questions.

EuCAIFCon 2025 is organized by EuCAIF, and hosted by the NFN Cagliari, the University of Cagliari and the University of Sassari. EuCAIF is a new European initiative for advancing the use of Artificial Intelligence (AI) in Fundamental Physics. Members are working on particle physics, astroparticle physics, nuclear physics, gravitational wave physics, cosmology, theoretical physics as well as simulation and computational infrastructure.

Conference Website

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The Dawn of Gravitational Wave Cosmology, April 28 – May 17 2025, Benasque

Starting at its very origin, the universe is awash with mechanisms for gravitational wave (GW) production. The upcoming launch of an unprecedented array of gravitational wave missions, capable of testing more than 20 decades in frequencies, will usher in the era of gravitational wave cosmology and open up a new window on fundamental physics. It is thus more timely than ever for the physics community to identify priorities and coordinate the efforts in the field.

It is fair to say theory has not yet fully caught up with experiments and that a theory-to-data pipeline ought to be built to maximize and amplify the discovery potential of GW probes. There is more: the sheer number and range of forthcoming probes call for a truly multi-messenger approach to cosmology.

The Benasque Program is the ideal setting to:
(i) put together experts on many different GW probes, from the CMB to large scale structure, from PTAs to laser interferometers. This will enable the community to paint a complete picture of what can be achieved in the coming years, a pursuit that will not be complete without a strong focus on (ii) the possibility of cross-correlating different probes. One key aspect of cross-correlations is indeed their ability to disentangle the primordial from the astrophysical GW signal. This is central to the success of the entire field of GW cosmology.

Benasque is the beautiful town on the Spanish Pyrenees where the ‘Pedro Pascual’ Science Center (https://www.benasque.org/) is located.

Confirmed Invited Speakers

Peter Adshead (UIUC)
Luca Amendola (Heidelberg)
Tessa Baker (ICG Portsmouth)
Enrico Barausse (Sissa)
Nicola Bartolo (Padova)
Daniele Bertacca (Padova)
Jose Blanco-Pillado (UPV/EHU)
Clare Burrage (Nottingham)
Philippe Brax (IPhT, Saclay)
Robert Caldwell (Dartmouth)
Carmelita Carbone (INAF)
Neil Cornish (Montana)
Antonio De Felice (Kyoto)
Claudia de Rham (Imperial)
Ema Dimastrogiovanni (Groningen)
Gabriele Franciolini (CERN)
Tomohiro Fujita (Ochanomizu & Waseda)
Juan Garcia-Bellido (IFT Madrid)
Oliver Gould (Nottingham)
Mark Hindmarsh (Helsinki & Sussex)
Lam Hui (Columbia)
Raul Jimenez (ICCUB Barcelona)
Sachiko Kuroyanagi (IFT Madrid)
Michele Maggiore (Geneva)
Azadeh Maleknejad (KCL)
Olga Mena (IFIC Valencia)
Suvodip Mukherjee (Tata)
Shinji Mukohyama (Kyoto)
Savvas Nesseris (IFT Madrid)
Ryo Namba (RIKEN)
Germano Nardini (Stavanger)
Marco Peloso (Padova)
Angelo Ricciardone (Pisa)
Toni Riotto (Geneva)
Mairi Sakellariadou (KCL)
Misao Sasaki (IPMU)
Kai Schmitz (Munster)
Danielle Steer (APC)
Nicola Tamanini (Toulouse)
Gianmassimo Tasinato (Swansea)
Andrew Tolley (Imperial)
Mark Trodden (UPenn)
David Wands (ICG Portsmouth)
Scott Watson (Syracuse)
Ivonne Zavala (Swansea)
Chiara Caprini (CERN & Geneva)
Alvise Raccanelli (Padova)
Samaya Nissanke (GRAPPA, Amsterdam)

Abstract deadline: 10th March 2025
Decisions on abstracts will be notified on 15th March 2025.

Conference Website

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24th Eastern Gravity Meeting, May 22 & 23, 2025 at University of New Hampshire, Durham

The Department of Physics and Astronomy at the University of New Hampshire is pleased to announce the 24th Eastern Gravity Meeting.  The meeting will be held on the campus, located in Durham, NH, on the New Hampshire seacoast about one hour north of Boston by car or train.  Researchers and students from all areas of gravitational physics, including computational gravity, observational gravity, theoretical classical and quantum gravity, cosmology and gravitational astrophysics are welcome to attend.  We especially encourage students and younger researchers to attend and present.  (As has been traditional, there will be a prize for the best student talk.)

There is no registration fee. However, we ask that everyone attending register using the form below by May 1st, as this will help us arrange sessions, organize talks, purchase food, etc. Unfortunately, since this is a free meeting there is no ability of the organizers to assist with travel expenses. There are numerous local accommodations available, and campus is accessible by car, plane, and Amtrak (Getting to campus).

Meeting Website

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Black Holes, Neutron Stars, and Gravitational Waves @ Black Sea, June 16-20 2025, Varna

The direct detection of gravitational waves heralded a new era in gravity and astrophysics, allowing us to probe the universe in ways previously thought impossible. Electromagnetic observations have also made remarkable progress over the last decade. Thus, we live now in times where the strong-field regime of gravity and the behavior of matter at ultra-high densities can be tested with unprecedented precision, offering new insights into fundamental physics.

Black Holes, Neutron Stars, and Gravitational Waves @ Black Sea aims to highlight the significance of these discoveries, discuss the latest theoretical and observational advancements, and explore future directions in the field. For this purpose, we will bring together gravity researchers from different backgrounds. We are delighted to be hosting a broad range of invited speakers and we aim for a constructive and interactive meeting. Apart from the invited speakers, we will be able to accommodate a limited number of contributed talks. A poster session will also be organized.

The main topics of the conference are:

  • Gravitational waves from the coalescence of black holes, neutron stars, and other compact object
  • Detection and analysis of gravitational waves
  • Strong field tests of General Relativity and alternative theories of gravity
  • Accretion discs and shadows of compact objects
  • Pulsar timing
  • Fundamental physics with gravitational waves
  • Modified theories of gravity
  • Long-range gravity, dark matter, dark energy

Invited speakers

Eugeny Babichev (University of Paris-Saclay)
Miguel Bezares (University of Nottingham)
Jose Luis Blázquez Salcedo (Complutense University of Madrid)
Christos Charmousis (University of Paris-Saclay)
Pablo Cerdá-Durán (University of Valencia)
Isabel Cordero-Carrión (University of Valencia)
José Antonio Font (University of Valencia)
Leonardo Gualtieri (University of Pisa)
Carlos Herdeiro (University of Aveiro)
Tanja Hinderer (Utrecht University)
Sascha Husa (Universitat de les Illes Balears)
Laur Järv (University of Tartu)
José Beltrán Jiménez (University of Salamanca)
Hao-Jui Kuan (Albert Einstein Institute, Potsdam)
Adrien Kuntz (CENTRA, Lisbon)
Jutta Kunz (University of Oldenburg)
Felipe Llanes-Estrada (Universidad Complutense de Madrid)
Elisa Maggio (Albert Einstein Institute, Potsdam)
Andrea Maselli (Gran Sasso Science Institute)
Hector Olivares (University of Aveiro)
Carlos Palenzuela (Universitat de les Illes Balears)
Lefteris Papantonopoulos (University of Athens)
George Pappas (Aristotle University of Thessaloniki)
Milton Ruiz (Univesity of Valencia)
Fethi Ramazanoglu (Koc University)
Violetta Sagun (University of Southampton)
Mairi Sakellariadou (King’s College London)
Nicolas Sanchis-Gual (University of Valencia)
Llibert Aresté Saló (Leuven University)
Masaru Shibata (Albert Einstein Institute, Potsdam)
Sergey Solodukhin (University of Tours)
Hajime Sotani (Kochi University)
Thomas Sotiriou (University of Nottingham)
Alejandro Torres-Forné (University of Valencia)
and more (TBC)

Location and Venue
Varna, Bulgaria

Varna, located on the eastern coast of Bulgaria, is a vibrant city with a rich history, stunning beaches, and a thriving cultural scene. As one of Europe’s oldest cities, Varna boasts a history spanning over 7,000 years, influenced by civilizations such as the Thracians, Greeks, Romans, and Byzantines.

The city’s location along the Black Sea provides beautiful beaches, attracting visitors from across Europe. Varna also offers several must-see attractions, such as the Varna Archaeological Museum, which houses the famous Gold of Varna, the world’s oldest processed gold treasure, as well as the Roman Baths, Varna Cathedral, and the Sea Garden.

Conference venue

The Conference venue is Hotel Cherno More in Varna. The hotel is located near the beautiful sea park, and then the beach.

The venue is around 10 km far from the Varna International Airport. There is a direct bus 409 connection to the venue.

Conference Website

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Cosmic Explorer Symposium and Physics and Astrophysics at the eXtreme workshop (PAX-X) at UIUC from 30 June – 3 July 2025

The 10th Physics and Astrophysics at the eXtreme workshop (PAX X) and the 3rd Cosmic Explorer Symposium will be held jointly at the University of Illinois Urbana-Champaign from 30 June – 3 July 2025.

The Cosmic Explorer Symposium will bring together the community to discuss important aspects of the design and operations of the Cosmic Explorer gravitational-wave observatories, covering both observational and instrument science.
The PAX-X workshop will explore how the ongoing and upcoming observations of gravitational and electromagnetic waves can help us understand physics at the extreme — strong gravitational fields, dark matter, nuclear physics, cosmology, and multimessenger astrophysics.

Panels will be organized around a small number of presentations to identify important areas for research and foster discussions and community feedback.

Registration will open shortly.

LOC: Hector O. Silva, Mateus Reinke Pelicer, Antonios Tsokaros, Helvi Witek,

SOC (confirmed members so far): Stefan Ballmer, Lisa Barsotti, Emanuele Berti, Alessandra Corsi, Paul Fulda, Anuradha Gupta, Jan Harms, Joey Key, Lionel London, David Ottaway, Bangalore Sathyaprakash, Hector O. Silva, Antonios Tsokaros, Helvi Witek

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Gravitational-Wave Detector Workshop (GWADW) May 18-23, Cocoa Beach, Florida

The 2025 Gravitational-Wave Advanced Detector Workshop (GWADW) occurs on May 18 to 23 at the Hilton Cocoa Beach, Florida, Oceanfront hotel. May 18 (Sunday) is the arrivals day, with an evening reception. We plan to end Friday, May 23rd. The workshop will provide a forum for exchange of ideas, novel concepts and unpublished results in the interdisciplinary research on the detection of gravitational waves (GW).

The workshop scope is broad:

(1) The ultimate configuration and performance of existing detectors such as A#, Voyager, Virgo_nEXT, and the KAGRA upgrade.
(2) Cosmic Explorer and the Einstein Telescope.
(3) LISA, the first space-based detector.
(4) Follow-on space-based detectors.
(5) Exotic and out-of-the box ideas.

It is very timely to have a workshop bringing together leading experts in experimental approaches to gravitational-wave detection. A willingness to explore novel ideas is also crucial to realize improved detectors. We invite all scientists interested in instrument science of gravitational-wave detection to attend the workshop. The program will be organized to allow for a range of interactions and discussions, as well as opportunities for junior participants to share their work.

Workshop Website

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5th Meeting on Gravitational Wave Science in Scandinavia, May 15-16, 2025

The gravitational physics landscape has been evolving rapidly, driven in good part by our ability to study strong-field regions, in particular black holes, with gravitational waves. Gravitational-wave astronomy will celebrate a decade of existence in 2025, and with it we celebrate a revolution in physics. The Scandinavian community has been producing exciting results in the field and will meet for the 5th Meeting on Gravitational Wave Science in Scandinavia.

This is a meeting in a series which started in 2019:

  • Aarhus University, Jan 30 (2019, organiser: Thomas Tauris)
  • NBI, Jan 31 (2020, organiser: Johan Samsing)
  • Aalborg University, Jan 18-19 (2023, organiser: Thomas Tauris)
  • University of Stavanger, May 23-24 (2024, organiser: Alex Nielsen)

The 2025 meeting will take place at the Niels Bohr Institute May 15-16, 2025.

The Niels Bohr Institute carries an important legacy in physics and is one of the leading institute in theoretical and experimental physics. Copenhagen is a very enjoyable and beautiful city, and as the capital of Denmark has plenty of wonderful things to do and is easy to reach. and we would be thrilled to organize a small historical tour of the institute. The entire Nordic region has plenty to offer and is a remarkable place for summer vacations.

Code of Conduct: This meeting aims to provide a safe and comfortable environment for scientific interactions. All participants are bound to the Niels Bohr Institute Code of Conduct.

Scientific organizing committee
Vitor Cardoso, Rico Lo, Johan Samsing, Thomas Tauris, Darach Watson.

Local organizing committee
Vitor Cardoso, Julie de Molade, Rico Lo.
For questions concerning this event, please contact Coordinator Julie de Molade (julie.demolade(at)nbi.ku.dk)

Meeting Website

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Moriond Gravitation 2025, March 30 – April 6 in La Thuile

The next Rencontres de Moriond and GRAM Colloquium on Gravitation will take place from March 30 to April 06, 2025 in La Thuile (Italy). It will be an "in person" meeting. The conference will review the subject two years after the last edition. The conference will include both review and contributed talks and will be organized only in plenary sessions.

The main topics of the conference are:

  • Gravitational waves detection from the coalescence of black holes and neutron star mergers
  • Detection and analysis of gravitational waves in the era of multimessenger astronomy
  • Strong field tests of General Relativity (Pulsars, Black holes,…)
  • Quantum sensors
  • Pulsar timing
  • Fundamental physics with gravitational waves
  • Tests of the equivalence principle
  • Astrometry, solar system ephemerides and observational gravity tests
  • Space geodesy, Earth and Planetary Gravity, Navigation
  • Clocks, lasers and fundamental constants
  • Tests of GR and alternative theories (CPT and Lorentz violation,…)
  • Modified gravity theories
  • Short range gravity and Casimir effect: classical, atom and neutron tests
  • Long range gravity, dark matter, dark energy
  • Cosmology, primordial black holes and gravitational Waves

Committee

  • Barry Barish – Caltech, Pasadena, USA
  • Lisa Barsotti MIT, Boston, USA
  • Marie Anne Bizouard – Observatoire de Nice, France
  • Luc Blanchet – IAP, Paris, France
  • Philippe Brax, IPhT Saclay
  • Benjamin Canuel, LP2N Bordeaux
  • Jacques Dumarchez – LPNHE, Paris, France
  • Benoît Famaey – Observatoire de Strasbourg, France
  • Aurélien Hees, Observatoire de Paris-PS, France
  • Antoine Petiteau – Irfu-SPP, Saclay, France
  • Serge Reynaud – LKB, Paris, France
  • Fulvio Ricci – Università La Sapienza, Rome Italy
  • Keith Riles – Univ Michigan, Ann Arbor, USA
  • Tim Sumner – Imperial College London, UK/Florida University, USA
  • Peter Wolf – Observatoire de Paris-PSL, France

Let us remind you that the deadline for abstract submission is: January 31st, 2025.

Conference Website