Probing the incompressibility of nuclear matter at ultra-high density through the prompt collapse of asymmetric neutron star binaries

Bibliographic Details
Title: Probing the incompressibility of nuclear matter at ultra-high density through the prompt collapse of asymmetric neutron star binaries
Authors: Perego, A., Logoteta, D., Radice, D., Bernuzzi, S., Kashyap, R., Das, A., Padamata, S., Prakash, A.
Publication Year: 2021
Collection: Astrophysics
General Relativity and Quantum Cosmology
Nuclear Theory
Subject Terms: Astrophysics - High Energy Astrophysical Phenomena, General Relativity and Quantum Cosmology, Nuclear Theory
More Details: Using 250 neutron star merger simulations with microphysics, we explore for the first time the role of nuclear incompressibility in the prompt collapse threshold for binaries with different mass ratios. We demonstrate that observations of prompt collapse thresholds, either from binaries with two different mass ratios or with one mass ratio but combined with the knowledge of the maximum neutron star mass or compactness, will constrain the incompressibility at the maximum neutron star density, $K_{\rm max}$, to within tens of percent. This, otherwise inaccessible, measure of $K_{\rm max}$ can potentially reveal the presence of hyperons or quarks inside neutron stars.
Comment: 7 pages, 4 figures; 2 tables and 4 figures in the appendix
Document Type: Working Paper
DOI: 10.1103/PhysRevLett.129.032701
Access URL: http://arxiv.org/abs/2112.05864
Accession Number: edsarx.2112.05864
Database: arXiv
More Details
DOI:10.1103/PhysRevLett.129.032701