Neutron Skins and Neutron Stars in the Multimessenger Era

Physical Review Letters
F J FattoyevC J Horowitz

Abstract

The historical first detection of a binary neutron star merger by the LIGO-Virgo Collaboration [B. P. Abbott et al., Phys. Rev. Lett. 119, 161101 (2017)PRLTAO0031-900710.1103/PhysRevLett.119.161101] is providing fundamental new insights into the astrophysical site for the r process and on the nature of dense matter. A set of realistic models of the equation of state (EOS) that yield an accurate description of the properties of finite nuclei, support neutron stars of two solar masses, and provide a Lorentz covariant extrapolation to dense matter are used to confront its predictions against tidal polarizabilities extracted from the gravitational-wave data. Given the sensitivity of the gravitational-wave signal to the underlying EOS, limits on the tidal polarizability inferred from the observation translate into constraints on the neutron-star radius. Based on these constraints, models that predict a stiff symmetry energy, and thus large stellar radii, can be ruled out. Indeed, we deduce an upper limit on the radius of a 1.4M_{⊙} neutron star of R_{⋆}^{1.4}<13.76  km. Given the sensitivity of the neutron-skin thickness of ^{208}Pb to the symmetry energy, albeit at a lower density, we infer a corresponding upper limit of about R_{s...Continue Reading

References

Jun 21, 2001·Physical Review Letters·C J Horowitz, J Piekarewicz
Oct 29, 2010·Nature·P B DemorestJ W T Hessels
Jan 15, 2011·Physical Review Letters·Luca BaiottiLuciano Rezzolla
May 1, 2012·Physical Review Letters·S AbrahamyanUNKNOWN PREX Collaboration
Apr 27, 2013·Science·John AntoniadisDavid G Whelan
Nov 5, 2013·Physical Review Letters·F J Fattoyev, J Piekarewicz
Nov 10, 2015·Physical Review Letters·Wei-Chia Chen, J Piekarewicz
Nov 4, 2017·Physical Review Letters·B P AbbottUNKNOWN LIGO Scientific Collaboration and Virgo Collaboration

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Citations

Nov 6, 2018·Physical Review Letters·B P AbbottUNKNOWN LIGO Scientific Collaboration and the Virgo Collaboration
Sep 22, 2020·Physical Review Letters·M SpiekerA Zilges
Jan 16, 2021·Physical Review Letters·Hung TanNico Yunes
Feb 27, 2021·Physical Review Letters·Mohammad Al-MamunSophia Han
May 15, 2021·Physical Review Letters·Brendan T ReedJ Piekarewicz

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