Massive neutron stars with antikaon condensates in a density-dependent hadron field theory

Prasanta Char and Sarmistha Banik
Phys. Rev. C 90, 015801 – Published 10 July 2014

Abstract

The measurement of 1.97±0.04Msolar for PSR J1614-2230 and 2.01±0.04Msolar for PSR J0348 + 0432 puts a strong constraint on the neutron star equation of state and its exotic composition at higher densities. In this paper, we investigate the possibility of an exotic equation of state within the observational mass constraint of 2Msolar in the framework of relativistic mean field model with density-dependent couplings. We particularly study the effect of antikaon condensates in the presence of hyperons on the mass-radius relationship of the neutron star.

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  • Received 14 April 2014
  • Revised 16 June 2014

DOI:https://doi.org/10.1103/PhysRevC.90.015801

©2014 American Physical Society

Authors & Affiliations

Prasanta Char1 and Sarmistha Banik2

  • 1Astroparticle Physics & Cosmology Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700 064, India
  • 2BITS Pilani, Hyderabad Campus, Samirpet Mondal, Hyderabad 500078, India

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Issue

Vol. 90, Iss. 1 — July 2014

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