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CosmoFONDUE 2027, January 25-29 at CERN

While new discoveries in cosmology have revolutionized our understanding of the Universe over the past decades, many unresolved mysteries remain, such as the nature of dark energy or the physical processes occurring in the earliest stages of history. To resolve these questions in light of new observations, joint efforts across the whole community are needed.

The conference Cosmological Fundamental Observables and Novel Discoveries in Universe Evolution (CosmoFONDUE) aims at offering an occasion for scientists across all fields of cosmology to interact in an engaging and inclusive atmosphere, and to reflect on promising new research directions. A special focus is put on fostering exchange among junior and senior researchers. The conference will cover a broad range of topics across the full redshift span, including:

  • Inflation, pre-CMB cosmology
  • CMB surveys
  • Neutrino & particle cosmology
  • Gravitational waves
  • Galaxy surveys, large-scale structure observables
  • Intensity mapping
  • Supernovae
  • Modified gravity
  • Cosmological tensions

Confirmed speakers:

  • David Alonso (U. of Oxford)
  • Tessa Baker (Portsmouth U., ICG)
  • Julien Carron (U. Geneva)
  • Edmund Copeland (Nottingham U.)
  • Rachel Gray (U. of Glasgow)
  • Kylar Greene (Seoul Natl. U. )
  • Lavinia Heisenberg (Heidelberg U.)
  • Oksana Iarygina (NORDITA)
  • Jae Hyeok Chang (Seoul Natl. U.)
  • Elisabeth Krause (U. of Arizona)
  • Sung Mook Lee (CERN)
  • Vivian Poulin (U. Montpellier)
  • Mickael Rigault (U. Lyon)
  • Marta Spinelli (Observatoire de la Côte d’Azur)
  • Licia Verde (ICCUB)
  • Seokhoon Yun (Kyungpook Natl. U.)

A previous edition of CosmoFONDUE took place in June 2025 at the University of Geneva.

Organizing committee:

  • Fabio Bernardo (University of Geneva)
  • Sveva Castello (Max Planck Institute for Astrophysics)
  • Valerie Domcke (CERN)
  • Silvia Gasparotto (CERN)
  • Nastassia Grimm (University of Oxford)
  • Hyung Do Kim (Seoul National University)
  • Danny Laghi (University of Zürich)
  • Hyun Min Lee (Chung-Ang University)
  • Seong Chan Park (Yonsei University)
  • Alica Ela Rogelj (University of Bern)
  • Philipp Schicho (University of Geneva)
  • Francesco Sorrenti (ICC, Barcelona U.)

Conference Website

Gravity 2027 – RESCEU International Symposium on Quantum Aspects of Gravity, February 15–19, 2027, Tokyo

The aim of the symposium is to foster comprehensive and in-depth discussions on the rapidly expanding frontiers of gravitational physics. The program will cover a wide spectrum of topics related to quantum aspects of gravity, including string/quantum gravity, quantum cosmology, quantum field theory in curved spacetime, inflationary quantum fluctuations, quantum effects on gravity experiments, and so on.

Schedule and Venue

  • Dates: February 15 (Mon)–19 (Fri), 2027
  • Reception: February 14 (Sun), 2027, 18:30–20:30 (on-site check-in: 18:00–21:00)
  • Venue: 5F Auditorium, Chemistry Main Building, Hongo Campus, The University of Tokyo

A related workshop will be held in the week before Gravity 2027. For details, please visit the workshop webpage.

Invited Speakers

  • Daniel Baumann (LeCosPA/Cambridge)
  • Luca Buoninfante (IGFAE)
  • Cédric Deffayet (ENS Paris)
  • Claudia de Rham (Imperial College London/Salam Centre)
  • Roberto Emparan (ICREA and Barcelona U.)
  • Gregory Gabadadze (Simons Foundation/NYU)
  • Ruth Gregory (King’s College London)
  • Sugumi Kanno (Kyushu)
  • Renate Loll (Radboud U., Nijmegen)
  • Dieter Lüst (LMU, Max-Planck-Institute for Physics)
  • Viatcheslav Mukhanov (LMU)
  • Lisa Randall (Harvard)*
  • Gary Shiu (Wisconsin-Madison)
  • Yuko Urakawa (KEK)
  • Masahito Yamazaki (IPMU)
  • Additional invited speakers to be announced.

* To be confirmed.

Important Deadlines

  • November 15, 2026: Registration deadline for those who wish to give a presentation or request visa support
  • November 30, 2026: Payment deadline for those who request visa support
  • December 31, 2026: Registration deadline for participation only
  • January 15, 2027: Payment deadline for those who do not request visa support

All deadlines are in Japan Standard Time (JST).

All participants must complete online registration and any required payment before the symposium. Participants may complete on-site check-in and collect their badge upon arrival, including during the reception on February 14, 2027.

Local Organizing Committee

Simran Arora (KCGI/YITP), Tomohiro Fujita (Ochanomizu), Anamaria Hell (IPMU), Vikramaditya Mondal (YITP), Shinji Mukohyama (RESCEU/YITP; Chair), Kota Numajiri (YITP), Alexandre Pombo (RESCEU), Masroor C. Pookkillath (Waseda U.), Sergi Sirera (RESCEU), Kazufumi Takahashi (RESCEU; Scientific Secretary), Jun’ichi Yokoyama (IPMU/RESCEU)

Scientific Organizing Committee

Katsuki Aoki (Saitama U.), Antonio De Felice (YITP), Francesco Di Filippo (Goethe U.), Mohammad Ali Gorji (IBS), Shinji Mukohyama (RESCEU/YITP), Naritaka Oshita (Kindai U.), Masroor C. Pookkillath (Waseda U.), Kazufumi Takahashi (RESCEU), Masahide Yamaguchi (IBS), Jun’ichi Yokoyama (IPMU/RESCEU)

Symposium Website

34th Texas Symposium on Relativistic Astrophysics, December 13-17 2027 in Melbourne

The 34th Texas Symposium on Relativistic Astrophysics will bring the international astrophysics and physics community to Melbourne, Australia, from 13–17 December 2027.

Hosted at Pullman Melbourne Albert Park, the Symposium will bring together researchers from around the world to explore the latest developments in relativistic astrophysics, cosmology, gravitation and fundamental physics.

The program will feature plenary presentations, parallel scientific sessions, contributed talks, poster presentations and opportunities for discussion, networking and collaboration.

Symposium Website

Inside and Out – Black Holes III, August 23-27, 2027 at Sapienza University of Rome

Black Holes III will gather experts working on the many complementary aspects of classical and quantum black holes: their exterior geometry, their internal structure, their perturbations and stability, their formation and mergers, their observational signatures, and their possible extensions beyond General Relativity.
The meeting will take place at Sapienza University of Rome from 23 to 27 August 2027.

The gravitational-physics landscape has evolved rapidly, mostly driven by the possibility of studying strong-field regions and, in particular, black holes.

Black holes are among the most remarkable macroscopic objects in the universe. According to General Relativity, their exterior is extremely simple, while their interior points toward the limits of the classical theory. Understanding black holes therefore requires a broad effort, connecting gravitational theory, astrophysics, numerical relativity, quantum gravity, high-energy physics, and data analysis.

Meeting Website

COSMO-26, August 24-28 2026 in Leiden

The 29th International Conference on Particle Physics and Cosmology (COSMO-26) will be hosted by Leiden University. This annual conference series, one of the largest venues for researchers at the intersection of particle physics and cosmology, brings together world experts to discuss the latest advancements in the field.

Topics

  • Gravitational Wave Cosmology
  • CMB
  • Neutrino cosmology
  • LSS and Weak gravitational lensing
  • Tensions/Status of LCDM
  • Primordial Black Holes
  • Cosmological magnetic fields
  • Inflation and primordial universe
  • Dark energy and modified gravity
  • Statistical inference in cosmology
  • Cosmological implications of Quantum Gravity
  • Dark matter

Invited Plenary Speakers

Kevork Abazajian
University of California Irvine

Alexandra Amon
Princeton University

Axel Brandenburg
NORDITA / Stockholm University /
Carnegie Mellon University

Chris van den Broeck
Utrecht University /
Nikhef

Erminia Calabrese
Cardiff University

Chiara Caprini
University of Geneva /
CERN

Jens Chluba
Joddrell Bank /
University of Manchester

Willem Elbers
Durham University

Simon Foreman
Arizona State University

Renata Kallosh
Stanford University

Eiichiro Komatsu
Max Planck Institute for Astrophysics /
Kavli IPMU

Andrii Neronov
Université Paris Cité /
EPFL

Alkistis Pourtsidou
Edinburgh University

Misao Sasaki
University of Tokyo / Kavli IPMU /
APCTP Pohang

Gary Shiu
University of Wisconsin Madison

Joop Schaye
Leiden University

Marko Simonovic
University of Florence

Filippo Vernizzi
IPhT-CEA Saclay

Session conveners

K. Bondarenko
S. Céspedes
P. Cole
W. Coulton
A. Duivenvoorden
C. Garcia Garcia
A. Garoffolo
M. Gervino
D. Glavan
H. Hildebrandt
O. Iarygina
B. Kavanagh
K. Kuijken
A. Malhotra
A. Nicola
M. Ovchynnikov
L. Roszkowski
E. Sellentin
B. Shakya
J. van de Vis
D.-G. Wang

Any inquiries can be sent to: cosmo-26(at)lorentz.leidenuniv.nl

Conference Website

QUEST 2026, September 23-25 in Pisa

This is the first edition of QUEST: Quantum Gravity, Early Universe, Space-Time and Theoretical Frontiers. This conference will be held in Pisa from 23rd to 25th September 2026 and is entirely organized by PhD students from the University of Pisa who are interested in Gravity, Quantum Field Theories and Cosmology.

With unprecedented precision tests of Einstein’s theory of gravitation and the ΛCDM model of the universe, a better theoretical understanding of fundamental theories is becoming increasingly important, in order to keep up with recent technological advancements. On the other hand, many questions remain open and lead us to look for extensions of these theories, such as the possibility of deviations from Einstein’s relativity and from the Standard Model of Particle Physics and Cosmology.

The aim of this conference is to bring together senior, junior and post-graduate researchers working at the interplay of Gravity and Cosmology, within the broader framework of Quantum Field Theory. Controversial and debated topics in modern theories of gravity, and new techniques in gauge and Generalized Symmetries theories, will be introduced with plenary talks from senior professors, followed by contributions from younger researchers. The final goal is to update participants on recent progress in modified gravity and cosmology, as well as their most recent Quantum Field Theory approaches, and potentially foster new collaborations within the community.

Contributions from participants will be in the form of invited seminars, submitted talks and posters. The deadline for submission of an abstract for a contributed talk or a poster is September 1st, 2026.

No registration fee is required.
Coffee breaks are offered by the organization.

This conference has received financial support from the University of Pisa and INFN, Sezione di Pisa.

Local and Scientific Organizers

Pierre Béchaz, Lorenzo Benfatto, Fabrizio Chicconi, Matteo Orso, Luca Parente, Dario Rossi

Conference Website

Cosmology from Home 2026, September 21st – October 2nd

Cosmology from Home is an annual online cosmology conference with an innovative format, which produces a dynamic and collaborative workshop experience within the online domain. The format includes the use of pre-recorded talks, and a combination of asynchronous and scheduled live discussions. A permanently available and freely-navigated discussion space also facilitates ongoing, organic discussions. The conference will bring together cosmologists from around the world to discuss the current state of cosmology at the interface of theory and observations.

This year, the over-arching conference theme will be “interdisciplinary within cosmology”. Not all talks need to be interdisciplinary, but all talks will be heavily encouraged to be aimed at general cosmology researchers, not subject-level experts.

Conference Website

LIGO-Virgo-KAGRA Collaboration Meeting September 21 – 25, 2026 at IUCAA, Pune

The September 2026 LIGO–Virgo–KAGRA (LVK) Collaboration Meeting will be held in Pune, India. 

Venue: IUCAA, Pune

Date: September 21 – 25, 2026

Registration Fees: There will be a registration fee for this conference. The details of registration fee payment will be updated in due course in the Registration page.

Coordinator:

  • Sanjit Mitra(IUCAA)

Code of conduct:

Meeting participants are expected to follow the LVK Code of Conduct:
https://dcc.ligo.org/LIGO-M1900037

Participants will avoid any inappropriate actions or statements based on individual characteristics such as age, race, ethnicity, sexual orientation, gender identity, gender expression, marital status, nationality, political affiliation, ability status, or educational background. Disruptive or harassing behaviour of any kind will not be tolerated. Harassment includes but is not limited to inappropriate or intimidating behaviour and language, unwelcome jokes or comments, unwanted touching or attention, offensive images, unwelcome photography, and stalking. Disruptive behaviour includes instances of disrespect and lack of civility in interactions with colleagues. All participants are expected at all times to deal with and address their fellow colleagues with respect and courtesy. This includes, but is not limited to, behaviour in in-person meetings, virtual (remote) meetings and email communications.

For any queries: Please write email to – lvk.pune(at)iucaa.in

Meeting Website

Universe Unravelled: Cosmic Strings at 50, September 1-5, 2026 in Cambridge

In a seminal paper in 1976, Tom Kibble first proposed the notion of cosmic strings, and a rich legacy of research in the field has followed over the past fifty years. A central goal of this Universe Unravelled workshop will be to revisit unresolved questions about cosmic strings that underpin predictions for cosmological observables, ranging from gravitational wave signals to axion masses. The workshop is intended to prioritise discussion with ample time to develop collaborative directions that could advance these outstanding challenges. The workshop is intended to prioritise discussion with ample time to develop collaborative directions that could advance these outstanding challenges.

In broad outline, the programme will include the following topics:

  • Retrospective perspectives on cosmic strings: their legacy, observational signatures, and future prospects.
  • Cosmic strings dynamics and scaling network evolution: Nambu-Goto and field theory simulations, and their correspondence with analytic modelling, including loops and radiative backreaction.
  • Quantifying cosmic string observables: gravitational waves, dark-matter axions, the CMB, and other probes.
  • Exploring cosmic string phenomenology: superstring networks, GUT-scale and EW strings, and superconductivity.
  • Connections with other topological defects and recent developments.

Cambridge venue

The conference venue is the Centre for Mathematical Sciences, the award-winning buildings that have housed the Department of Applied Mathematics and Theoretical Physics since 2000. With its excellent facilities and good transport connections to international airports, the CMS has an excellent track record hosting international conferences.

Conference Website

10th Roma International Conference on Astroparticle Physics, September 7-11 2026

RICAP-2026 will be the 10th edition of the RICAP Conference. The acronym stands for Roma International Conference on Astro-Particle physics. The Conference, entirely dedicated to the study of high energy cosmic rays, traditionally has been organized by the INFN Sections and Physics Departments of Roma Universities “La Sapienza”, “Tor Vergata” and “Roma Tre”.

The 10th edition of the Conference will be hosted by the Sapienza University of Roma. The aim of the Conference will be to present and discuss some of the most relevant theoretical and experimental results in the field of high energy cosmic radiations (gamma, neutrinos, charged cosmic rays). Special attention will be paid to the multi-messenger search for high energy cosmic rays sources, including gravitational wave searches. A special session will be dedicated to Dark Matter search and to low energy study of inherent neutrino properties. The Conference will give the opportunity to collect experimental results from presently operating experiments. Experiments in progress and future projects will be discussed, debating on different features and on sensitivities.

Conference Website