Slowly rotating neutron stars in the nonminimal derivative coupling sector of Horndeski gravity

Adolfo Cisterna, Térence Delsate, Ludovic Ducobu, and Massimiliano Rinaldi
Phys. Rev. D 93, 084046 – Published 26 April 2016

Abstract

This work is devoted to the construction of slowly rotating neutron stars in the framework of the nonminimal derivative coupling sector of Horndeski theory. We match the large radius expansion of spherically symmetric solutions with cosmological solutions, and we find that the most viable model has only one free parameter. Then, by using several tabulated and realistic equations of state, we establish numerically the upper bound for this parameter in order to construct neutron stars in the slow rotation approximation with the maximal mass observed today. We finally study the surface redshift and the inertia of these objects and compare them with known data.

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  • Received 19 March 2016

DOI:https://doi.org/10.1103/PhysRevD.93.084046

© 2016 American Physical Society

Physics Subject Headings (PhySH)

  1. Physical Systems
Gravitation, Cosmology & Astrophysics

Authors & Affiliations

Adolfo Cisterna1,2,*, Térence Delsate3,†, Ludovic Ducobu3,‡, and Massimiliano Rinaldi4,5,§

  • 1Instituto de Ciencias Fisícas y Matemáticas, Universidad Austral de Chile, Valdivia, Chile
  • 2Departamento de Física, Universidad de Concepción, Casilla, 160-C, Concepción, Chile
  • 3Theoretical and Mathematical Physics Department, University of Mons 20, Place du Parc, 7000 Mons, Belgium
  • 4Dipartimento di Fisica, Università di Trento, Via Sommarive 14, 38123 Povo (TN), Italy
  • 5TIFPA—INFN, Via Sommarive 14, 38123 Povo (TN), Italy

  • *adolfo.cisterna@uach.cl
  • terence.delsate@umons.ac.be
  • ludovic.ducobu@student.umons.ac.be
  • §massimiliano.rinaldi@unitn.it

See Also

Neutron stars in general second order scalar-tensor theory: The case of nonminimal derivative coupling

Adolfo Cisterna, Térence Delsate, and Massimiliano Rinaldi
Phys. Rev. D 92, 044050 (2015)

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Vol. 93, Iss. 8 — 15 April 2016

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