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Article: Properties of dense matter in a supernova core in the relativistic mean-field theory

TitleProperties of dense matter in a supernova core in the relativistic mean-field theory
Authors
KeywordsDense matter
Relativity
Stars: neutron
Stars: supernovae: general
Issue Date1998
PublisherE D P Sciences. The Journal's web site is located at http://www.aanda.org
Citation
Astronomy And Astrophysics, 1998, v. 330 n. 2, p. 569-577 How to Cite?
AbstractWe have used the Zimanyi & Moszkowski model in the relativistic mean-field theory to study the properties of asymmetric nuclear matter and the equation of state (EOS) for supernova matter. We find that even though muons are included in the chemical composition of neutron-star matter, this model still results in a small proton concentration so that only the modified Urca process occurs as a main neutrino reaction in neutron stars. This conclusion is opposite to that of the previous studies in the relativistic mean-field theory. The incompressibility of symmetric nuclear matter is consistent with both the experimental values extracted from the nuclear physics and the constraints placed on the EOS by observations of neutron star masses. If the EOS for supernova matter is described by this model, the prompt mechanism for Type II supervovae cannot work, but the EOS is likely to be favourable to the delayed explosion mechanism.
Persistent Identifierhttp://hdl.handle.net/10722/80572
ISSN
2014 Impact Factor: 4.378
2015 SCImago Journal Rankings: 2.446
References

 

DC FieldValueLanguage
dc.contributor.authorDai, ZGen_HK
dc.contributor.authorCheng, KSen_HK
dc.date.accessioned2010-09-06T08:07:55Z-
dc.date.available2010-09-06T08:07:55Z-
dc.date.issued1998en_HK
dc.identifier.citationAstronomy And Astrophysics, 1998, v. 330 n. 2, p. 569-577en_HK
dc.identifier.issn0004-6361en_HK
dc.identifier.urihttp://hdl.handle.net/10722/80572-
dc.description.abstractWe have used the Zimanyi & Moszkowski model in the relativistic mean-field theory to study the properties of asymmetric nuclear matter and the equation of state (EOS) for supernova matter. We find that even though muons are included in the chemical composition of neutron-star matter, this model still results in a small proton concentration so that only the modified Urca process occurs as a main neutrino reaction in neutron stars. This conclusion is opposite to that of the previous studies in the relativistic mean-field theory. The incompressibility of symmetric nuclear matter is consistent with both the experimental values extracted from the nuclear physics and the constraints placed on the EOS by observations of neutron star masses. If the EOS for supernova matter is described by this model, the prompt mechanism for Type II supervovae cannot work, but the EOS is likely to be favourable to the delayed explosion mechanism.en_HK
dc.languageengen_HK
dc.publisherE D P Sciences. The Journal's web site is located at http://www.aanda.orgen_HK
dc.relation.ispartofAstronomy and Astrophysicsen_HK
dc.subjectDense matteren_HK
dc.subjectRelativityen_HK
dc.subjectStars: neutronen_HK
dc.subjectStars: supernovae: generalen_HK
dc.titleProperties of dense matter in a supernova core in the relativistic mean-field theoryen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0004-6361&volume=330&spage=569&epage=577&date=1998&atitle=Properties+of+Dense+Matter+in+a+Supernova+Core+in+the+Relativistic+Mean-Field+Theoryen_HK
dc.identifier.emailCheng, KS: hrspksc@hkucc.hku.hken_HK
dc.identifier.authorityCheng, KS=rp00675en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-0007071606en_HK
dc.identifier.hkuros39169en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0007071606&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume330en_HK
dc.identifier.issue2en_HK
dc.identifier.spage569en_HK
dc.identifier.epage577en_HK
dc.publisher.placeFranceen_HK
dc.identifier.scopusauthoridDai, ZG=7201387760en_HK
dc.identifier.scopusauthoridCheng, KS=9745798500en_HK

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