Stephan Rosswog | Multi-messenger signals from merging neutron stars: a new tool and a new scenario

Friday 27 Oct 2023, 10:00 → 12:00 Europe/Berlin

SR 05 (Villa)

Neutron star mergers are related to a large number of (astro-)physical

questions. For example, they had long been suspected to produce gravitational

waves, gamma ray bursts and -by some- to produce heavy "rapid neutron

capture" elements. While overall convincing, all these conjectures were

only based on indirect arguments and none was proven by direct observations.

This situation changed dramatically on August 17, 2017 when the first ever

neutron star merger was detected in both gravitational and electromagnetic

waves. In this talk I will discuss our current understanding of the merger process

and its multi-messenger signatures. I will also present a novel simulation tool:

the Lagrangian Numerical Relativity code SPHINCS_BSSN. As an application of this

new tool, I will discuss a merger scenario that has not been explored before.