APPEC Town Meeting Geneva 2026, September 2-3 As part of the roadmap development process, a community-wide survey was conducted in 2024 within the astroparticle physics community, followed more recently by a second survey across European astroparticle physics collaborations. Drawing on these valuable inputs, the APPEC Scientific Advisory Committee is preparing a draft Roadmap addressing all strategic themes identified in the surveys, with a preliminary version expected in summer 2026. Meeting Website

CoCoNuT Meeting 2026, September 8-11 at University of Southampton The CoCoNuT Meeting is a series of workshops aimed at fostering collaboration among relativistic astrophysics groups, especially within Europe. The series has been taking place yearly since 2009, and this edition will be hosted at the University of Southampton (United Kingdom). Meeting Website

TeV Particle Astrophysics 2026, August 30 to September 4, 2026 in Tendo, Japan The conference will bring together researchers working across astroparticle physics, astrophysics, cosmology, and particle physics. TeVPA 2026 aims to provide a broad forum for discussing recent results, ongoing developments, and future directions in the field. Conference Website

5th MaNiTou Summer School on Gravitational Waves, June 29 to July 4, 2026, Nice The school will cover the emerging field of gravitational wave detection and of its scientific exploitation. Following their discovery by the LIGO/Virgo collaboration, many other gravitational wave detections are expected at the existing and future gravitational antennas. They will open up a new window of exploration, sometimes unique and sometimes complementary to what other messengers such as electromagnetic radiation (radio, IR, visible, UV, X-rays, gamma rays) and neutrinos can reveal of the physics at work in our Universe. The objective of the school is to provide the students with a solid introduction to most aspects of…

The Interplay of Magnetic Fields, Nuclear Physics, and Nucleosynthesis in Neutron-Star Mergers and Supernovae, September 21-25 2026 in Trento ECT*-EMMI/GSI workshop . Neutron-star mergers and core-collapse supernovae are among the most promising sites for the synthesis of heavy elements in the universe. These astrophysical phenomena bring together a rich interplay of general relativity, neutrino physics, nuclear reactions, and magneto-hydrodynamics. Among these factors, magnetic fields are increasingly recognized as playing a pivotal role in shaping the dynamics and nucleosynthetic outcomes of these events. Workshop Website

GW Workshop, June 29 – July 3, 2026 at Principia Institute, São Paulo, Brazil The second generation of Gravitational wave (GW) detectors has been operating until recently at unprecedented sensitivity, providing observations of binary system coalescences, whose sources are neutron stars and black holes with masses ranging from one to one hundred solar masses. Workshop Website

High-Energy Astrophysics: Sources and Detection – ISAPP School Paris-Saclay 2026, June 8-19, 2026 The ISAPP school on „High-Energy Astrophysics: Sources and Detection“ will be held at the Institut Pascal, within the Paris-Saclay University, France. The goal of the school is to offer a general overview on topics in high energy astrophysics related to cosmic rays, from observations to the modelling of high-energy particle sources. It will particularly focus on mult-messenger observations, at the dawn of the CTA era. The school is primarily aimed at PhD students working in this field, as well as young postdocs. School Website

Black Holes & Cosmology, June 15-19 2026, Granada The purpose of the international conference series Black Holes & Cosmology is to bring together world-renowned experts as well as junior researchers working on theoretical and observational aspects of black holes, particularly (but not limited to) their role in cosmology. Conference Website

Binary compact objects on eccentric orbits and their gravitational-wave signatures, September 1-6 2026, Corfu The workshop will bring together experts in theory, numerical relativity, data analysis, and astrophysics, as well as early-career researchers entering these fields. We aim to create a collaborative environment where participants can share results, exchange ideas, and identify the next key steps. Workshop Website