Astrophysical measurement of the equation of state of neutron star matter

Feryal Ozel, Gordon Baym, Tolga Güver

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218 Scopus citations


We present the first astrophysical measurement of the pressure of cold matter above nuclear saturation density, based on recently determined masses and radii of three neutron stars. The pressure at higher densities is below the predictions of equations of state that account only for nucleonic degrees of freedom, and thus present a challenge to the microscopic theory of neutron star matter.

Original languageEnglish (US)
Article number101301
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number10
Publication statusPublished - Nov 11 2010


ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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