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GR: Fachverband Gravitation und Relativitätstheorie

GR 11: Relativistic Astrophysics II

GR 11.3: Talk

Wednesday, March 13, 2024, 16:25–16:45, HBR 14: HS 2

An overview of nuclear and astrophysical constraints on the equation of state for neutron-rich dense matter — •Hauke Koehn — Institut für Physik und Astronomie, Universität Potsdam, Haus 28, Karl-Liebknecht-Str. 24/25, 14476, Potsdam, Germany

At present, a multitude of different observations, experiments and theoretical considerations exist to address the nature of matter at extreme densities. We present a detailed overview across these distinct sources of information and explain why and how they impose constraints on the cold equation of state of neutron-rich dense matter (EOS). By performing Bayesian inference on a large set of candidate EOS for each input, we are able to combine the distinct constraints, which delivers stringent constraints on the radii and maximum mass of neutron stars, and further restrictions on empirical nuclear parameters or the speed of sound.

Keywords: Equation of state; Multimessenger astrophysics; Binary neutron stars; Nuclear Theory