articleThe Astrophysical JournalJul 19, 2013BRONZE OA

EQUATION OF STATE AND NEUTRON STAR PROPERTIES CONSTRAINED BY NUCLEAR PHYSICS AND OBSERVATION

KHK. HebelerJMJ. M. LattimerCJC. J. PethickASA. Schwenk

The Ohio State University · Stony Brook University · +7 more institutions

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Abstract

Microscopic calculations of neutron matter based on nuclear interactions de-rived from chiral effective field theory, combined with the recent observation of a 1.97 ± 0.04M neutron star, constrain the equation of state of neutron-rich matter at sub- and supranuclear densities. We discuss in detail the allowed equa-tions of state and the impact of our results on the structure of neutron stars, the crust-core transition density, and the nuclear symmetry energy. In particular, we show that the predicted range for neutron star radii is robust. For use in as-trophysical simulations, we provide detailed numerical tables for a representative set of equations of state consistent with these constraints. Subject…

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Authors

4
  • KH
    K. HebelerCorresponding

    The Ohio State University

  • JM
    J. M. Lattimer

    Stony Brook University

  • CJ
    C. J. Pethick

    Nordic Institute for Theoretical Physics, University of Copenhagen, Stockholm University, Niels Brock, KTH Royal Institute of Technology

  • AS
    A. Schwenk

    GSI Helmholtz Centre for Heavy Ion Research, Technische Universität Darmstadt

Topics & keywords

Topics
Keywords
  • Neutron star
  • Equation of state
  • Nuclear matter
  • Neutron
  • Field (mathematics)
  • Range (aeronautics)
  • State (computer science)
  • Nuclear astrophysics
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