## Renseignements pratiques

## Informations sur l'organisme

IP2I (UMR 5822)

Adresse : IP2I, 4 rue Enrico Fermi

Villeurbanne, France

The recruited postdoctoral researcher will work at IP2I, Lyon, France.

She/he will join the theory group, and perform in HPC environments numerical simulations of compact object mergers, in particular of binary black holes, of binary neutron stars and of binaries composed of one black hole and one neutron star. For neutron star physics, she/he will be helped by the local expertise in the theory group, which will provide nuclear equations of state in a format readable by the numerical simulations.

She/he will also join the Virgo Collaboration, where she/he will participate to the analysis of merger signals and to the generation of catalogs of templates to interpret the results. Within the LIGO/Virgo collaboration, a handful of independent analyses (among which, the one developed at IP2I) are used in order to probe the interferometers' data collected during the O3 run (April 2019 - March 2020). The aim of these analyses is to detect gravitational wave signals from the coalescences of compact objects. The results of such detections are then studied by a dedicated working group (called Parameter Estimation), to obtain the best possible determination of the properties of the astrophysical objects which have generated the signals. Dozens of new events have been recorded by LIGO/Virgo interferometers. These data are currently under study and will be the subject of several publications in 2021. The project that the postdoctoral researcher will have to pursue will imply an involvement in the Parameter Estimation working group and will help the IP2I Virgo group to gain visibility on new research subjects in the collaboration.

Villeurbanne, France

**Job location and description**

The recruited postdoctoral researcher will work at IP2I, Lyon, France.

She/he will join the theory group, and perform in HPC environments numerical simulations of compact object mergers, in particular of binary black holes, of binary neutron stars and of binaries composed of one black hole and one neutron star. For neutron star physics, she/he will be helped by the local expertise in the theory group, which will provide nuclear equations of state in a format readable by the numerical simulations.

She/he will also join the Virgo Collaboration, where she/he will participate to the analysis of merger signals and to the generation of catalogs of templates to interpret the results. Within the LIGO/Virgo collaboration, a handful of independent analyses (among which, the one developed at IP2I) are used in order to probe the interferometers' data collected during the O3 run (April 2019 - March 2020). The aim of these analyses is to detect gravitational wave signals from the coalescences of compact objects. The results of such detections are then studied by a dedicated working group (called Parameter Estimation), to obtain the best possible determination of the properties of the astrophysical objects which have generated the signals. Dozens of new events have been recorded by LIGO/Virgo interferometers. These data are currently under study and will be the subject of several publications in 2021. The project that the postdoctoral researcher will have to pursue will imply an involvement in the Parameter Estimation working group and will help the IP2I Virgo group to gain visibility on new research subjects in the collaboration.