Microphysical Aspects of Binary Neutron Star Mergers

Michail Chabanov (), Christian Ecker, Carlo Musolino, Luciano Rezzolla, Samuel Tootle and Konrad Topolski
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Michail Chabanov: Goethe Universität, Institut für Theoretische Physik
Christian Ecker: Goethe Universität, Institut für Theoretische Physik
Carlo Musolino: Goethe Universität, Institut für Theoretische Physik
Luciano Rezzolla: Goethe Universität, Institut für Theoretische Physik
Samuel Tootle: Goethe Universität, Institut für Theoretische Physik
Konrad Topolski: Goethe Universität, Institut für Theoretische Physik

A chapter in High Performance Computing in Science and Engineering '23, 2026, pp 91-105 from Springer

Abstract: Abstract Neutron star mergers represent a unique opportunity to investigate fundamental physics in regimes which are inaccessible in Earth-based laboratories. In this report we present two projects aimed at furthering our understanding of these systems. Firstly, we present a novel implementation of a neutrino transport scheme which will allow us to incorporate weak interactions self-consistently in future simulations. Secondly, we present high resolution simulations aimed at understanding the impact of the initial magnetic-field topology on the exponential amplification in the postmerger phase of neutron star mergers. We also give a brief introduction to the numerical techniques used to model these scenarios and summarise their performance on the HAWK supercomputer system.

Date: 2026
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DOI: 10.1007/978-3-031-91312-9_7

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