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Gravitational Wave Probes of Physics Beyond Standard Model 4, June 23-27, 2025 at University of Warsaw

The purpose of this workshop is to discuss how gravitational waves may serve as tools to explore possible fundamental physics beyond the Standard Model, such as first-order phase transitions in the early Universe, cosmic strings, primordial black holes and scenarios for cosmological inflation. In addition, it will explore how gravitational wave signals may reveal possible modifications of general relativity. With these aims in mind, the workshop will bring together experts in particle physics, cosmology and the gravitational wave community.

Confirmed speakers:

  • Lara Sousa (Porto U) [cosmic defects]
  • Fabrizio Rompineve (UA Barcelona) [cosmic defects]
  • Alberto Roper Pol (U Geneva) [phase transition]
  • Oliver Gould (Nottingham U) [phase transition]
  • David Mateos (ICREA and U Barcelona) [phase transition]
  • Simone Blasi (DESY) [phase transition]
  • Nicola Bartolo (U Padua) [inflation]
  • Marek Szczepańczyk (U Warsaw) [astrophysics]
  • Alexander Jenkins (Cambridge U) [phase transition]
  • Christoph Ringeval (CP3, Louvain) [cosmic defects]

Workshop Website

10th Physics and Astrophysics at the eXtreme Workshop and 3rd Cosmic Explorer Symposium in Urbana, Illinois on June 30 – July 3, 2025

The 10th Physics and Astrophysics at the eXtreme (PAX) Workshop and the 3rd Cosmic Explorer Symposium are events sponsored by the Physics Department of the University of Illinois at Urbana-Champaign and taking place in Urbana, Illinois on June 30 – July 3, 2025 at the Beckman Institute Auditorium (Room 1025) and Room 1005.

The meeting aims to explore how gravitational and electromagnetic wave observations can help us understand extreme physics, including strong gravitational fields, dark matter, nuclear physics, cosmology, and multimessenger astrophysics. 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. Together, PAX-X and the Cosmic Explorer Symposium will explore the science opportunities that come with the next-generation gravitational-wave detectors.

Workshop Website

2025 GW Open Data Workshop, May 12-14

Open Data Workshops provide participants with a hands-on introduction to working with data from LIGO, Virgo, and KAGRA. The workshops include lectures, software tutorials, and a data challenge that asks participants to find binary black hole merger signals in real observatory data.

This year’s workshop will use a hybrid format, where participants may join virtually through the online course or may join an in-person Study Hub. Participants are also encouraged to start their own Study Hubs if one in their area is not available. Workshop registration is free and enrollment is now open. We are also looking for mentors to update the tutorials and host Study Hubs – please contact Jonah Kanner if you are interested in helping.

Workshop details and enrollment are now available at https://learn.gwosc.org/

2025 North American Einstein Toolkit Workshop, June, 9-13 at University of Texas at Austin

The 2025 edition of the North American Einstein Toolkit Workshop will be held at the University of Texas at Austin. This is an opportunity for researchers and students to learn about the Einstein Toolkit (https://einsteintoolkit.org/), a community-driven software platform of core computational tools to advance and support research in relativistic astrophysics and gravitational physics.

The workshop will offer a mixture of talks and tutorials. The tutorials provide an opportunity for new users to become familiar with the Einstein Toolkit cyberinfrastructure. The talks are aimed at highlighting exciting science using the tools of numerical relativity, in particular, the Einstein Toolkit. At the end of the workshop, there will be a broad discussion on future directions of the Einstein Toolkit.

Workshop Website

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

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

2nd Annual Workshop on Self-Force and Amplitudes, September 9-12, 2025, Southampton

The 2nd Annual Workshop on Self-Force and Amplitudes will be hosted by the Gravitational Waves Group at the University of Southampton from 9th - 12th September 2025. 

Recent developments in perturbative quantum field theory have offered new insights into the classical two-body dynamics in the post-Minkowskian expansion (i.e., expansion in Newton’s constant), leveraging efficient computational techniques traditionally used for collider physics. At the same time, the gravitational self-force expansion has allowed the gravitational-wave community to develop a description of the two-body dynamics which is fully non-perturbative in the coupling, while being accurate only in the limit of small mass ratios.

There are exciting prospects in uniting these two complementary approaches, possibly yielding powerful new modeling methods for gravitational-wave astronomy and new insights into the connections between gravity and quantum field theory. There have recently been notable steps toward this goal, but much more remains to be done to fully benefit from synergies between the two methods. This workshop is a sequel to the event held at the Higgs Centre in Edinburgh in 2024, which brought together experts from both communities to establish new collaborations.

Topics will include

using data from scattering scenarios to inform models of gravitationally bound systems
using the self-force expansion to determine unknown high-order terms in the post-Minkowskian series, and vice versa
using self-force results to inform resummations of post-Minkowskian calculations, and vice versa
validating and informing resummation techniques using numerical relativity simulations of scattering orbits
describing Kerr black holes with amplitudes and point particles
investigating double copy structures in classical gravity and black hole perturbation theory

Due to limited space, registration will be moderated.

Invited speakers

Leor Barack
Poul Daamgard
Thibault Damour
Gustav Jakobsen
Dimitrios Kosmopoulos
Oliver Long
Julio Parra-Martinez
Nabha Shah
Canxin Shi
Davide Usseglio
Maarten van de Meent
Pierre Vanhove
Chris Whittall
Mao Zeng
more to come…

Workshop Website

APCTP Workshop on Gravitational Waves 2025, April 20-25, Taipei

The workshop APCTP-GW2025 aims to bring together researchers from the Asia Pacific region who are working on various aspects of the rapidly advancing field of GW astronomy. Set in the beautiful backdrop of Taipei in the spring, participants will not only engage in discussions but also enjoy the excellent weather, vibrant culture, and authentic traditional cuisine.

Gravitational waves (GWs) are transforming our understanding of the Universe, offering a revolutionary window into cosmic phenomena that were previously inaccessible through traditional astronomical observations. The LIGO-Virgo-KAGRA consortium’s observations of hundreds of transient GW events from merging stellar mass black holes and neutron stars during the last decade have inaugurated the era of GW Astronomy by deepening our knowledge of these extreme stars of Einstein’s General Relativity. Rapidly maturing Pulsar Timing Array efforts have provided glimpses of nanohertz GWs, offering new insights into high-energy phenomena in the early Universe and supermassive black hole binaries. The upcoming/proposed GW observatories like SKA, LIGO-India, LISA, Taiji/TianQin, ET, CE, and LILA are expected to address some of the most pressing challenges in modern cosmology, such as the Hubble tension and the nature of inflation in the early Universe while providing ultra-sensitive tests for Einstein’s universe.

Invited Speakers

Alvin Chua (NUS)
Anna Heffernan (UIB)*
Che-Yu Chen (RIKEN)
Feng-Li Lin (NTNU)
George Hobbs (CSIRO)
Jai-chan Hwang (IBS)
Otto Hannuksela (CUHK)
Ryan Shannon (Swinburne)
Sarah Vigeland (UWM)
Takahiro Tanaka (Kyoto U.)
Tjonnie Li (KU Leuven)
Vicharit Yingcharoenrat (Chulalongkorn U.)
Xiao Xue (IFAE)
Xingjiang Zhu (BNU)
Yuki Inoue (NCU)
More To Be Confirmed*

Dates and Venue

20 – 25 April, 2025
Institute of Physics, Academia Sinica, Taipei, Taiwan
Registration deadline: 1st March 2025
No registration fee, but slots are limited
Contributed talks and posters are welcome

Code of Conduct

The organizers are committed to ensuring that this workshop is a positive, inclusive, and enriching experience for all participants. We aim to foster an environment free from harassment and discrimination, welcoming individuals of all genders, sexual orientations, disabilities, physical appearances, body sizes, ethnicities, nationalities, religions, and ages. Harassment of any kind will not be tolerated. Thank you for helping us create a supportive and collaborative community.

Scientific Organising Committee

Achamveedu Gopakumar (Tata Institute of Fundamental Research)
Ian Vega (National Institute of Physics, University of the Philippines Diliman)
Kin-Wang Ng (Academia Sinica)
Reginald Christian Bernardo (APCTP)
Stephen Appleby (APCTP)

Workshop Website

Workshop on “Gravitational Wave Cosmology”, February 19-21, 2025 in Brussels

The aim of this workshop is to bring together experts working in diverse fields of observational cosmology to address pressing questions that the new observations are currently bringing such as:
  • How can we distinguish cosmological sources from the detected Pulsar Timing Array signal?
  • What is the nature of the Hubble tension: systematic errors or a sign for new physics?
  • How will gravitational waves standard sirens contribute in the near future?
  • How to distinguish the primordial gravitational wave background from the astrophysical background?
  • Which notable multi-messenger signatures should be searched for ?

Invited Speakers

James Alvey (Cambridge U., UK)
Dillon Brout (Boston U., USA)
François Foucart (U. New Hampshire, USA)
Gabriele Franciolini (CERN, Switzerland)
Wendy Freedman (Chicago U., USA)
Archisman Ghosh (Ghent U., Belgium)
Rachel Gray (Glasgow U., Scotland)
Stefan Hild (Maastricht U., The Netherlands)
Tanja Hinderer (Utrecht U., The Netherlands)
Justin Janquart (UCLouvain, Belgium)
Mansi Kasliwal (Caltech, USA)
Julien Lesgourgues (RWTH U., Germany)
Chiara Mingarelli (Yale U., USA)
Andrea Mitridate (DESY, Germany)
Antonella Palmese (Carnegie Mellon U., USA )
Adam Riess (Johns Hopkins U., USA)
Mairi Sakellariadou (Kings’s College London, UK)

Scientific and Organising Committee

Giacomo Bruno (UCLouvain, Belgium)
Sébastien Clesse (ULB, Brussels, Belgium)
Geoffrey Compère (ULB, Brussels, Belgium)
Archisman Ghosh (Ghent U., Belgium)
Alberto Marrioti (VUB, Brussels, Belgium)
Samaya Nissanke (UvA, The Netherlands)
Nick Van Remortel (Antwerp U., Belgium)
Alex Sevrin (VUB, Brussels, Belgium)

Practical information for attendees
Registration

Attendance is free of charge but registration is required (limited space).

To register, please click on ‘Click HERE to register’ at the top right of the webpage. After registering you should receive an automatic response confirming that your registration has been submitted. This message is then followed by an email confirming your participation. If you experience any technical issues during registration, please contact Isabelle Van Geet (isabelle.vangeet(at)solvayinstitutes.be)

Workshop Website

EMRI Search and Inference within the LISA Global Fit – Part I, June 23–25 2025, APC Paris

When compact objects such as neutron stars or stellar-mass black holes venture into the vicinity of giant black holes, they can form highly asymmetric and strongly relativistic binary systems known as extreme-mass-ratio inspirals (EMRIs). EMRIs are some of the most promising gravitational-wave sources that the upcoming space mission LISA might observe, but also some of the most difficult to model, detect and characterise.

The aim of this workshop is to bring together experts in EMRI science and LISA data analysis, to assess the state of the art in the field and to further develop plans for the optimal extraction of science from such sources. The workshop will focus mainly on data analysis techniques for EMRI search and inference in the broader context of the LISA global fit, but will naturally extend to adjacent topics such as the construction of accurate and efficient waveform templates, and the impact of astrophysical environments on EMRI modelling and interpretation.

Workshop Website