20 May 2019
Institut d'Astrophysique de Paris
Europe/Paris timezone

Modeling the strong-field dynamics of binary neutron star merger

20 May 2019, 14:00
1h
Amphithéâtre (Institut d'Astrophysique de Paris)

Amphithéâtre

Institut d'Astrophysique de Paris

98bis boulevard Arago, 75014 Paris

Speaker

Sebastiano Bernuzzi (Université d'Iéna)

Description

The observation of gravitational and electromagnetic waves from a binary neutron star merger in August 2017 conveyed key information on the nature of matter at supranuclear densities, on the origin of short-gamma ray burst, on the production site of of heavy elements via r-process nucleosynthesis, and on cosmography. Thus, multimessenger observations of compact binary mergers hold the promise to unprecedent insights on some of the most fundamental physics questions. A crucial and necessary ingredient to intepret such observations is the precise knowledge of the dynamics of the sources. I will talk about recent developments on the modeling of neutron star mergers using numerical simulations in general relativity. I will focus on the numerical exploration of the the merger remnant and mass ejecta and their dependence on the binary parameters. I will discuss detailed models of the gravitational waves and kilonova light curves, highlighting the prospect of using them in joint analysis of multimessenger data.

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