Equation of state constraints from the threshold binary mass for prompt collapse of neutron star mergers
Abstract
Using hydrodynamical simulations for a large set of high-density matter equations of state (EoSs) we systematically determine the threshold mass M_thres for prompt black-hole formation in equal-mass and asymmetric neutron star (NS) mergers. We devise the so far most direct, general and accurate method to determine the unknown maximum mass of nonrotating NSs from merger observations revealing M_thres. Considering hybrid EoSs with hadron-quark phase transition, we identify a new, observable signature of quark matter in NS mergers. Furthermore, our findings have direct applications in gravitational wave searches, kilonova interpretations and multi-messenger constraints on NS properties.
Keywords
Cite
@article{arxiv.2004.00846,
title = {Equation of state constraints from the threshold binary mass for prompt collapse of neutron star mergers},
author = {Andreas Bauswein and Sebastian Blacker and Vimal Vijayan and Nikolaos Stergioulas and Katerina Chatziioannou and James A. Clark and Niels-Uwe F. Bastian and David B. Blaschke and Mateusz Cierniak and Tobias Fischer},
journal= {arXiv preprint arXiv:2004.00846},
year = {2020}
}
Comments
Accepted for publication in Phys. Rev. Lett.; 14 pages, 5 figures