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

Abstract

Microscopic calculations of neutron matter based on nuclear interactions derived from chiral effective field theory, combined with the recent observation of a 1.97 {+-} 0.04 M{sub Sun} neutron star, constrain the equation of state of neutron-rich matter at sub- and supranuclear densities. We discuss in detail the allowed equations 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 astrophysical simulations, we provide detailed numerical tables for a representative set of equations of state consistent with these constraints.

Authors:
 [1];  [2];  [3];  [4]
  1. Department of Physics, The Ohio State University, Columbus, OH 43210 (United States)
  2. Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794-3800 (United States)
  3. The Niels Bohr International Academy, The Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, DK-2100 Copenhagen O (Denmark)
  4. ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum fuer Schwerionenforschung GmbH, D-64291 Darmstadt (Germany)
Publication Date:
OSTI Identifier:
22140294
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 773; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0004-637X
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASTROPHYSICS; CHIRALITY; COMPUTERIZED SIMULATION; DENSITY; EQUATIONS OF STATE; FIELD THEORIES; INTERACTIONS; LIMITING VALUES; NEUTRON STARS; NEUTRONS; NUCLEAR MATTER; NUCLEAR PHYSICS; SYMMETRY

Citation Formats

Hebeler, K., Lattimer, J. M., Pethick, C. J., and Schwenk, A. EQUATION OF STATE AND NEUTRON STAR PROPERTIES CONSTRAINED BY NUCLEAR PHYSICS AND OBSERVATION. United States: N. p., 2013. Web. doi:10.1088/0004-637X/773/1/11.
Hebeler, K., Lattimer, J. M., Pethick, C. J., & Schwenk, A. EQUATION OF STATE AND NEUTRON STAR PROPERTIES CONSTRAINED BY NUCLEAR PHYSICS AND OBSERVATION. United States. doi:10.1088/0004-637X/773/1/11.
Hebeler, K., Lattimer, J. M., Pethick, C. J., and Schwenk, A. Sat . "EQUATION OF STATE AND NEUTRON STAR PROPERTIES CONSTRAINED BY NUCLEAR PHYSICS AND OBSERVATION". United States. doi:10.1088/0004-637X/773/1/11.
@article{osti_22140294,
title = {EQUATION OF STATE AND NEUTRON STAR PROPERTIES CONSTRAINED BY NUCLEAR PHYSICS AND OBSERVATION},
author = {Hebeler, K. and Lattimer, J. M. and Pethick, C. J. and Schwenk, A.},
abstractNote = {Microscopic calculations of neutron matter based on nuclear interactions derived from chiral effective field theory, combined with the recent observation of a 1.97 {+-} 0.04 M{sub Sun} neutron star, constrain the equation of state of neutron-rich matter at sub- and supranuclear densities. We discuss in detail the allowed equations 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 astrophysical simulations, we provide detailed numerical tables for a representative set of equations of state consistent with these constraints.},
doi = {10.1088/0004-637X/773/1/11},
journal = {Astrophysical Journal},
issn = {0004-637X},
number = 1,
volume = 773,
place = {United States},
year = {2013},
month = {8}
}