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Article: Gravitational collapse of a Hagedorn fluid in Vaidya geometry

TitleGravitational collapse of a Hagedorn fluid in Vaidya geometry
Authors
KeywordsPhysics - nuclear physics
Issue Date2003
PublisherAmerican Physical Society. The Journal's web site is located at http://prd.aps.org
Citation
Physical Review D (Particles and Fields), 2003, v. 68 n. 6, p. 064005:1-10 How to Cite?
AbstractThe gravitational collapse of a high-density null charged matter fluid, satisfying the Hagedorn equation of state, is considered in the framework of the Vaidya geometry. The general solution of the gravitational field equations can be obtained in an exact parametric form. The conditions for the formation of a naked singularity, as a result of the collapse of the compact object, are also investigated. For an appropriate choice of the arbitrary integration functions the null radial outgoing geodesic, originating from the shell focussing central singularity, admits one or more positive roots. Hence a collapsing Hagedorn fluid could end either as a black hole, or as a naked singularity. A possible astrophysical application of the model, to describe the energy source of gamma-ray bursts, is also considered.
Persistent Identifierhttp://hdl.handle.net/10722/43418
ISSN
2004 Impact Factor: 5.156
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorHarko, TCen_HK
dc.date.accessioned2007-03-23T04:45:19Z-
dc.date.available2007-03-23T04:45:19Z-
dc.date.issued2003en_HK
dc.identifier.citationPhysical Review D (Particles and Fields), 2003, v. 68 n. 6, p. 064005:1-10en_HK
dc.identifier.issn0556-2821en_HK
dc.identifier.urihttp://hdl.handle.net/10722/43418-
dc.description.abstractThe gravitational collapse of a high-density null charged matter fluid, satisfying the Hagedorn equation of state, is considered in the framework of the Vaidya geometry. The general solution of the gravitational field equations can be obtained in an exact parametric form. The conditions for the formation of a naked singularity, as a result of the collapse of the compact object, are also investigated. For an appropriate choice of the arbitrary integration functions the null radial outgoing geodesic, originating from the shell focussing central singularity, admits one or more positive roots. Hence a collapsing Hagedorn fluid could end either as a black hole, or as a naked singularity. A possible astrophysical application of the model, to describe the energy source of gamma-ray bursts, is also considered.en_HK
dc.format.extent119742 bytes-
dc.format.extent122136 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/pdf-
dc.languageengen_HK
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prd.aps.orgen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsPhysical Review D (Particles and Fields). Copyright © American Physical Society.en_HK
dc.subjectPhysics - nuclear physicsen_HK
dc.titleGravitational collapse of a Hagedorn fluid in Vaidya geometryen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0556-2821&volume=68&issue=6&spage=064005:1&epage=10&date=2003&atitle=Gravitational+collapse+of+a+Hagedorn+fluid+in+Vaidya+geometryen_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1103/PhysRevD.68.064005en_HK
dc.identifier.hkuros88738-
dc.identifier.isiWOS:000185830200036-

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