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 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/).

1 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))

2 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)

3 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)

4 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)

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

Orateur: Mathieu VENET

6 Round table / discussion (jointly among WGs)

15:50 Coffee break

7 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)

8 Inferring dense matter properties from gravitational waves

Orateur: Aleksandra Vishnevskaia (LPC Caen)

9 Modelling astrophysical stochastic signals in LISA (WG Source populations and Multi-messenger Astronomy)

Orateur: Alexandre Toubiana (Université de Milan-Bicocca)

mer. 18 novembre

10 Microphysics inputs for compact star dynamics

Orateur: Francesca GULMINELLI (LPC/Ensicaen)

11 Neutrino production, absorption, and scattering rates with Skyrme RPA

Orateur: Michael URBAN (IJCLab)

12 Multimessenger astronomy with sub-solar mass neutron stars

Orateur: Camille Allan (IP2I)

10:15 Coffee break

13 Gravitational Wave Signal produced by Core-Collapse Supernovae

Orateur: Alphonse MOREAU (AIM / APC)

14 Impact of the equation of state on rotating and magnetised core-collapse supernovae

Orateur: Dr Marco Cusinato (CEA-Saclay)

15 Relaxation of the magnetic field of magnetars

Orateur: Madiou Diakite (CEA)

16 Round table / discussion