GdR Ondes gravitationnelles: meeting of the working group "Neutron stars, supernovae and nucleosynthesis of heavy elements"

17 nov. 2026, 13:00 → 18 nov. 2026, 12:30 Europe/Paris

Salle du Conseil, IAP

Anthea FANTINA (GANIL ({CNRS}UPR3266)), Matteo Bugli (Institut d'astrophysique de Paris - CNRS), Sebastien Guillot (IRAP)

The working group "Neutron stars, supernovae and nucleosynthèsis of heavy elements" (« Étoiles à neutrons, supernovas et synthèse des éléments lourds ») of the Groupement de Recherche (GdR) Ondes Gravitationnelles organises a meeting on the 17 (afternoon) and 18 (morning) November 2026 at Salle du Conseil of IAP (Paris). The aim is to involve a large proportion of the "astrophysics and nuclear physics" community with an interest in the detection of gravitational waves.

mar. 17 novembre

13:00 → 13:30 Arrival / Welcome - Afternoon session in common with the working groups "Source populations" and "Multi-messenger Astronomy"

The Tuesday afternoon session will be jointly organised with the working groups "Source populations" and "Multi-messenger Astronomy". Talks will be comprised of topics of the different working groups (see https://indico.in2p3.fr/event/40430/).

13:30 → 14:00 Isotropic Gravitational-Wave Background Search Results from the 4th LVK observing run (WG Source populations and Multi-messenger Astronomy)

Orateur: Alba ROMERO RODRIGUEZ (Laboratoire D'Annecy de Physique de Particules (LAPP))

14:00 → 14:20 Joint multi-messenger inference of double white dwarfs with LISA (WG Source populations and Multi-messenger Astronomy)

Orateur: Nina Kunert (Observatoire de la Cote d'Azur)

14:20 → 14:40 A deep, large-scale survey for LISA white dwarf binary candidates with the Canada-France Hawaii Telescope (WG Source populations and Multi-messenger Astronomy)

Orateur: Alice Perego (Observatoire de la Côte d'Azur)

14:40 → 15:00 Comparing degrees of EOS knowledge in prior choices for gravitational-wave parameter estimation and equation-of-state inference for binary neutron stars

Orateur: Adrian Abac (LPC Caen)

15:00 → 15:20 The Parameter Space of BNS Populations: Formation Channels and Merger Rates (WG Source populations and Multi-messenger Astronomy)

Orateur: Mathieu VENET

15:20 → 15:50 Round table / discussion (jointly among WGs)

15:50 → 16:20 Coffee break

16:20 → 16:40 Natal kicks and r-process enrichment: starting to trace binary neutron star populations in cosmological simulations (WG Source populations and Multi-messenger Astronomy)

Orateur: Arturo Nunez-Castineyra (Institut d'Astrophysique de Paris)

16:40 → 17:00 Inferring dense matter properties from gravitational waves

Orateur: Aleksandra Vishnevskaia (LPC Caen)

17:00 → 17:20 Modelling astrophysical stochastic signals in LISA (WG Source populations and Multi-messenger Astronomy)

Orateur: Alexandre Toubiana (Université de Milan-Bicocca)

mer. 18 novembre

09:00 → 09:35 Microphysics inputs for compact star dynamics

Orateur: Francesca GULMINELLI (LPC/Ensicaen)

09:35 → 09:55 Neutrino production, absorption, and scattering rates with Skyrme RPA

Orateur: Michael URBAN (IJCLab)

09:55 → 10:15 Multimessenger astronomy with sub-solar mass neutron stars

Orateur: Camille Allan (IP2I)

10:15 → 10:45 Coffee break

10:45 → 11:20 Gravitational Wave Signal produced by Core-Collapse Supernovae

Orateur: Alphonse MOREAU (AIM / APC)

11:20 → 11:40 Impact of the equation of state on rotating and magnetised core-collapse supernovae

Orateur: Dr Marco Cusinato (CEA-Saclay)

11:40 → 12:00 Relaxation of the magnetic field of magnetars

Orateur: Madiou Diakite (CEA)

12:00 → 12:20 Round table / discussion