descriptionPublicationkeyboard_double_arrow_right Article , Preprint , Other literature type 20 Aug 2005Embargo end date: 01 Jan 2004 English Publisher:American Astronomical SocietyJournal:The Astrophysical Journal, volume 629, pages 969-978 (issn: 0004-637X, eissn: 1538-4357,

Authors: Alford, Mark; Braby, Matt; Paris, Mark; Reddy, Sanjay;

doi: 10.1086/430902 , 10.48550/arxiv.nucl-th/0411016

arXiv: nucl-th/0411016

Hybrid Stars that Masquerade as Neutron Stars

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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.

22 pages, LaTeX. Extra figure and explanation added

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Keywords

Nuclear Theory (nucl-th), High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Nuclear Theory, Astrophysics (astro-ph), FOS: Physical sciences, Astrophysics

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