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Article: Nucleation of quark matter in neutron star cores

TitleNucleation of quark matter in neutron star cores
Authors
KeywordsDense matter
Pulsars: general
Stars: interiors
Stars: neutron
Issue Date2004
PublisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/2041-8205
Citation
Astrophysical Journal Letters, 2004, v. 608 n. 2 I, p. 945-956 How to Cite?
AbstractWe consider the general conditions of quark droplet formation in high-density neutron matter. The growth of the quark bubble (assumed to contain a sufficiently large number of particles) can be described by means of a Fokker-Planck equation. The dynamics of the nucleation essentially depends on the physical properties of the medium in which it takes place. The conditions for quark bubble formation are analyzed within the framework of both dissipative and nondissipative (with zero bulk and shear viscosity coefficients) approaches. The conversion time of the neutron star to a quark star is obtained as a function of the equation of state of the neutron matter and of the microscopic parameters of the quark nuclei. As an application of the formalism obtained, we analyze the first-order phase transition from neutron matter to quark matter in rapidly rotating neutron star cores, triggered by the gravitational energy released during the spinning down of the neutron star. The endothermic conversion process, via gravitational energy absorption, could take place in a very short time interval, of the order of a few tens of seconds, in a class of dense compact objects with very high magnetic fields, called magnetars.
Persistent Identifierhttp://hdl.handle.net/10722/43425
ISSN
2015 Impact Factor: 5.487
2015 SCImago Journal Rankings: 3.369
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorHarko, Ten_HK
dc.contributor.authorCheng, KSen_HK
dc.contributor.authorTang, PSen_HK
dc.date.accessioned2007-03-23T04:45:27Z-
dc.date.available2007-03-23T04:45:27Z-
dc.date.issued2004en_HK
dc.identifier.citationAstrophysical Journal Letters, 2004, v. 608 n. 2 I, p. 945-956en_HK
dc.identifier.issn2041-8205en_HK
dc.identifier.urihttp://hdl.handle.net/10722/43425-
dc.description.abstractWe consider the general conditions of quark droplet formation in high-density neutron matter. The growth of the quark bubble (assumed to contain a sufficiently large number of particles) can be described by means of a Fokker-Planck equation. The dynamics of the nucleation essentially depends on the physical properties of the medium in which it takes place. The conditions for quark bubble formation are analyzed within the framework of both dissipative and nondissipative (with zero bulk and shear viscosity coefficients) approaches. The conversion time of the neutron star to a quark star is obtained as a function of the equation of state of the neutron matter and of the microscopic parameters of the quark nuclei. As an application of the formalism obtained, we analyze the first-order phase transition from neutron matter to quark matter in rapidly rotating neutron star cores, triggered by the gravitational energy released during the spinning down of the neutron star. The endothermic conversion process, via gravitational energy absorption, could take place in a very short time interval, of the order of a few tens of seconds, in a class of dense compact objects with very high magnetic fields, called magnetars.en_HK
dc.format.extent230741 bytes-
dc.format.extent122136 bytes-
dc.format.extent12158 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypetext/plain-
dc.languageengen_HK
dc.publisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/2041-8205en_HK
dc.relation.ispartofAstrophysical Journal Lettersen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsThe Astrophysical Journal. Copyright © University of Chicago Press.en_HK
dc.subjectDense matteren_HK
dc.subjectPulsars: generalen_HK
dc.subjectStars: interiorsen_HK
dc.subjectStars: neutronen_HK
dc.titleNucleation of quark matter in neutron star coresen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0004-637X&volume=608&issue=2 pt 1&spage=945&epage=956&date=2004&atitle=Nucleation+of+Quark+Matter+in+Neutron+Star+Coresen_HK
dc.identifier.emailHarko, T: harko@hkucc.hku.hken_HK
dc.identifier.emailCheng, KS: hrspksc@hkucc.hku.hken_HK
dc.identifier.authorityHarko, T=rp01333en_HK
dc.identifier.authorityCheng, KS=rp00675en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1086/420879en_HK
dc.identifier.scopuseid_2-s2.0-3142687676en_HK
dc.identifier.hkuros90076-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-3142687676&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume608en_HK
dc.identifier.issue2 Ien_HK
dc.identifier.spage945en_HK
dc.identifier.epage956en_HK
dc.identifier.isiWOS:000222184300028-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridHarko, T=7006485783en_HK
dc.identifier.scopusauthoridCheng, KS=9745798500en_HK
dc.identifier.scopusauthoridTang, PS=36719640800en_HK

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