Hybrid stars that masquerade as neutron stars
Nuclear Theory
2014-11-18 v2 Astrophysics
High Energy Physics - Phenomenology
Abstract
We show that a hybrid (nuclear + quark matter) star can have a mass-radius relationship very similar to that predicted for a star made of purely nucleonic matter. We show this for a generic parameterization of the quark matter equation of state, and also for an MIT bag model, each including a phenomenological correction based on gluonic corrections to the equation of state. We obtain hybrid stars as heavy as 2 M_solar for reasonable values of the bag model parameters. For nuclear matter, we use the equation of state calculated by Akmal, Pandharipande, and Ravenhall using many-body techniques. Both mixed and homogeneous phases of nuclear and quark matter are considered.
Keywords
Cite
@article{arxiv.nucl-th/0411016,
title = {Hybrid stars that masquerade as neutron stars},
author = {Mark Alford and Matt Braby and Mark Paris and Sanjay Reddy},
journal= {arXiv preprint arXiv:nucl-th/0411016},
year = {2014}
}
Comments
22 pages, LaTeX. Extra figure and explanation added