Is SAX J1808.4-3658 a Strange Star?

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dc.contributor.authorLi, X. D.
dc.contributor.authorBombaci, I.
dc.contributor.authorDey, Mira
dc.contributor.authorDey, Jishnu [UNESP]
dc.contributor.authorVan den Heuvel, E. P J
dc.contributor.institutionNanjing University
dc.contributor.institutionI.N.F.N. Sezione di Pisa
dc.contributor.institutionPresidency College
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionMaulana Azad College
dc.contributor.institutionUniversity of Amsterdam
dc.contributor.institutionIntl. Centre for Theoretical Physics
dc.date.accessioned2014-05-27T11:19:47Z
dc.date.available2014-05-27T11:19:47Z
dc.date.issued1999-11-08
dc.description.abstractThe possibility of strange stars is one of the most important issues in the study of compact objects. Here we use the observations of the newly discovered millisecond x-ray pulsar SAX J1808.4-3658 to constrain the radius of the compact star. Comparing the mass-radius relation of SAX J1808.4-3658 with theoretical models for both neutron stars and strange stars, we argue that a strange star model could be more consistent with SAX J1808.4-3658, and suggest that it is a likely strange star candidate. Our results are useful in constraining microscopic chiral symmetry restoration parameters in the quantum chromodynamics (QCD) modeling of strange matter.en
dc.description.affiliationDepartment of Astronomy Nanjing University, Nanjing 210093
dc.description.affiliationDipartimento di Fisica Universitá di Pisa I.N.F.N. Sezione di Pisa, via Buonarroti 2, 1-56127 Pisa
dc.description.affiliationDepartment of Physics Presidency College, Calcutta 700 073
dc.description.affiliationIFT-UNESP, 145 Rua Pamplona, São Paulo 01405-900
dc.description.affiliationAzad Physics Centre Maulana Azad College, Calcutta 700 013
dc.description.affiliationAstronomical Institute University of Amsterdam, Kruislaan 403, 1098 SJ Amsterdam
dc.description.affiliationIntl. Centre for Theoretical Physics, Trieste
dc.description.affiliationUnespIFT-UNESP, 145 Rua Pamplona, São Paulo 01405-900
dc.format.extent3776-3779
dc.identifierhttp://dx.doi.org/10.1103/PhysRevLett.83.3776
dc.identifier.citationPhysical Review Letters, v. 83, n. 19, p. 3776-3779, 1999.
dc.identifier.doi10.1103/PhysRevLett.83.3776
dc.identifier.issn0031-9007
dc.identifier.scopus2-s2.0-18344411261
dc.identifier.urihttp://hdl.handle.net/11449/130555
dc.identifier.wosWOS:000083546200008
dc.language.isoeng
dc.publisherAmerican Physical Soc
dc.relation.ispartofPhysical Review Letters
dc.relation.ispartofjcr8.839
dc.relation.ispartofsjr3,622
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.titleIs SAX J1808.4-3658 a Strange Star?en
dc.typeArtigo
dcterms.licensehttp://publish.aps.org/authors/transfer-of-copyright-agreement
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Física Teórica (IFT), São Paulopt

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