Kilonova Emissions from Neutron Star Merger Remnants: Implications for Nuclear Equation of State

2024/08/14 by Lund, Kelsey A., Somasundaram, Rahul, McLaughlin, Gail C. +3 · 1 citation
#FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE) #Nuclear Theory (nucl-th)

paper · doi:10.48550/arxiv.2408.07686

Abstract

Multi-messenger observation of binary neutron-star mergers can provide valuable information on the nuclear equation of state (EoS). Here, we investigate to which extent electromagnetic observations of the associated kilonovae allow us to place constraints on the EoS. For this, we use state-of-the-art three-dimensional general-relativistic magneto-hydrodynamics simulations and detailed nucleosynthesis modeling to connect properties of observed light curves to properties of the accretion disk, and hence, the EoS. Using our general approach, we use multi-messenger observations of GW170817/AT2017gfo to study the impact of various sources of uncertainty on inferences of the EoS. We constrain the radius of a \rm1.4 M_\odot neutron star to lie within \rm10.19≤ R_1.4≤ 13.0~km and the maximum mass to be \rmM_TOV≤ 3.06 M_\odot.

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• Implication of multimessenger observations on the relativistic mean-field equation of state of dense nuclear matter and skin thickness of nuclei

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