Hybrid Stars that Masquerade as Neutron Stars | Zendy

Mark Alford | Zendy; Matt Braby | Zendy; Mark Paris | Zendy; Sanjay Reddy | Zendy

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Hybrid Stars that Masquerade as Neutron Stars

Author(s) -

Mark Alford,

Matt Braby,

Mark Paris,

Sanjay Reddy

Publication year - 2005

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/430902

Subject(s) - physics , strange matter , equation of state , nuclear matter , quark star , neutron star , stars , solar mass , radius , particle physics , nuclear physics , quark , exotic star , star (game theory) , astrophysics , nucleon , quantum mechanics , computer security , computer science

We show that a hybrid (nuclear + quark matter) star can have a mass-radiusrelationship very similar to that predicted for a star made of purely nucleonicmatter. We show this for a generic parameterization of the quark matterequation of state, and also for an MIT bag model, each including aphenomenological correction based on gluonic corrections to the equation ofstate. We obtain hybrid stars as heavy as 2 M_solar for reasonable values ofthe bag model parameters. For nuclear matter, we use the equation of statecalculated by Akmal, Pandharipande, and Ravenhall using many-body techniques.Both mixed and homogeneous phases of nuclear and quark matter are considered.Comment: 22 pages, LaTeX. Extra figure and explanation adde

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