The Maximum Mass of a Neutron Star | Zendy

V. Kalogera | Zendy; Gordon Baym | Zendy

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The Maximum Mass of a Neutron Star

Author(s) -

V. Kalogera,

Gordon Baym

Publication year - 1996

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/310296

Subject(s) - neutron star , physics , equation of state , neutron , upper and lower bounds , nuclear matter , x ray binary , nuclear physics , astrophysics , nucleon , quantum mechanics , mathematics , mathematical analysis

Observational identification of black holes as members of binary systemsrequires the knowledge of the upper limit on the gravitational mass of aneutron star. We use modern equations of state for neutron star matter, fittedto experimental nucleon-nucleon scattering data and the properties of lightnuclei, to calculate, within the framework of Rhoades & Ruffini (1974), theminimum upper limit on a neutron star mass. Regarding the equation of state asvalid up to twice nuclear matter saturation density, rho_{nm}, we obtain asecure upper bound on the neutron star mass equal to 2.9 solar masses. We alsofind that in order to reach the lowest possible upper bound of 2.2 solarmasses, we need understand the physical properties of neutron matter up to adensity of about 4 times rho_{nm}.Comment: 8 pages, 3 Postscript Figures, uses aaspp4.sty. Accepted for publication in the Astrophysical Journal Letter

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