Troisième Assemblée Générale du GdR Ondes Gravitationnelles

Session

Groupes de travail: Population des sources, Etoiles à neutrons, supernovae et synthèse des éléments lourds, Prédiction et suivi des signaux multi-messager

14 oct. 2020, 16:00

En ligne

70. ENGRAVE: O3, O4 and the GAP

Susanna Vergani (CNRS - Paris Observatory)

14/10/2020 16:00

PRÉDICTION ET SUIVI DES SIGNAUX MULTI-MESSAGER

I will present the activity of the ENGRAVE collaboration during the LV O3 run, the science case for the gap between the O3 and O4 runs and the perspectives on the organization of the collaboration for the O4 run.

59. Fink, a new generation broker for the LSST community

Dr Julien Peloton (CNRS-IJCLab)

14/10/2020 16:15

PRÉDICTION ET SUIVI DES SIGNAUX MULTI-MESSAGER

Next generation experiments such as the Vera Rubin Observatory Legacy Survey of Space and Time (LSST) will provide an unprecedented volume of time-domain data opening a new era of optical big data in astronomy. To fully harness the power of these surveys, new methods must be developed to deal with large data volumes and to coordinate resources for follow-up of promising candidates.
In this...

72. 3U Transat : constellation de nano-satellites pour observer le ciel transitoire

Dr Olivier GODET (IRAP)

14/10/2020 16:30

PRÉDICTION ET SUIVI DES SIGNAUX MULTI-MESSAGER

L'essor de l'astronomie multi-messager et du ciel transitoire nécessite des moyens d'observations à haute énergie couvrant tout le ciel afin de permettre la meilleure synergie avec les détecteurs d'ondes gravitationnelles et de neutrinos. Le recours à une constellation de nano-satellites pour détecter des transitoires à haute énergie et notamment des sursauts gamma est une solution innovante...

49. Progenitors of low-mass binary black-hole mergers in the isolated binary evolution scenario

Prof. Sylvain Chaty (Université Paris Diderot, CEA Saclay)

14/10/2020 16:45

POPULATIONS DES SOURCES

The formation history, progenitor properties and expected rates of the binary black holes discovered by the LIGO-Virgo collaboration, through the gravitational-wave emission during their coalescence, are now a topic of active research. We aimed at studying the progenitor properties and expected rates of the two lowest-mass binary black hole mergers, GW151226 and GW170608, detected within the...

56. Did binary neutron star mergers produce all the r-process elements in the Universe ?

Irina Dvorkin (Institut d'Astrophysique de Paris)

14/10/2020 17:00

ÉTOILES A NEUTRONS, SUPERNOVÆ ET SYNTHÈSES DES ÉLÉMENTS LOURDS

The main origin of r-process elements is currently a subject of debate, the candidates being binary neutron star mergers and rare supernovae. While the discovery of GW170817 and the associated kilonova has provided strong support to the former hypothesis, detailed comparison of the predictions of galaxy evolution models with the observed r-process abundances reveal important discrepancies both...