Neutron stars in f(R) gravity with perturbative constraints

Alan Cooney, Simon Dedeo, Dimitrios Psaltis

Research output: Contribution to journalArticle

84 Scopus citations

Abstract

We study the structure of neutron stars in f(R) gravity theories with perturbative constraints. We derive the modified Tolman-Oppenheimer-Volkov equations and solve them for a polytropic equation of state. We investigate the resulting modifications to the masses and radii of neutron stars and show that observations of surface phenomena alone cannot break the degeneracy between altering the theory of gravity versus choosing a different equation of state of neutron-star matter. On the other hand, observations of neutron-star cooling, which depends on the density of matter at the stellar interior, can place significant constraints on the parameters of the theory.

Original languageEnglish (US)
Article number064033
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume82
Issue number6
DOIs
StatePublished - Sep 28 2010

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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