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Article: Approximate mass and radius formulas for static and rotating strange stars

TitleApproximate mass and radius formulas for static and rotating strange stars
Authors
KeywordsPhysics - nuclear physics
Issue Date2000
PublisherAmerican Physical Society. The Journal's web site is located at http://prd.aps.org
Citation
Physical Review D - Particles, Fields, Gravitation And Cosmology, 2000, v. 62 n. 8, p. 1-8 How to Cite?
AbstractUsing the general relativistic conditions of thermodynamic equilibrium and fitting with values obtained from numerical integration of structure equations we derive approximate mass and radius formulas for static and uniformly rotating strange stars obeying the bag model equation of state. In the static case our formulas can reproduce the values of the mass and radius of the quark star with an error smaller than 1%. The maximum mass and radius of the strange stars can be predicted by fitting only one set of static configuration data. With the use of results obtained for the static configuration and with some supplementary assumptions about the behavior of the metric tensor at the center of the star, we can predict the rotational properties of maximally rotating strange stars within an error of 3%. From the approximate formulas we can derive the "empirical" formula relating the maximum rotation frequency of the uniformly rotating strange stars to the mass and radius of the maximum allowable static configuration. ©2000 The American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/43314
ISSN
2004 Impact Factor: 5.156
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorCheng, KSen_HK
dc.contributor.authorHarko, Ten_HK
dc.date.accessioned2007-03-23T04:43:23Z-
dc.date.available2007-03-23T04:43:23Z-
dc.date.issued2000en_HK
dc.identifier.citationPhysical Review D - Particles, Fields, Gravitation And Cosmology, 2000, v. 62 n. 8, p. 1-8en_HK
dc.identifier.issn0556-2821en_HK
dc.identifier.urihttp://hdl.handle.net/10722/43314-
dc.description.abstractUsing the general relativistic conditions of thermodynamic equilibrium and fitting with values obtained from numerical integration of structure equations we derive approximate mass and radius formulas for static and uniformly rotating strange stars obeying the bag model equation of state. In the static case our formulas can reproduce the values of the mass and radius of the quark star with an error smaller than 1%. The maximum mass and radius of the strange stars can be predicted by fitting only one set of static configuration data. With the use of results obtained for the static configuration and with some supplementary assumptions about the behavior of the metric tensor at the center of the star, we can predict the rotational properties of maximally rotating strange stars within an error of 3%. From the approximate formulas we can derive the "empirical" formula relating the maximum rotation frequency of the uniformly rotating strange stars to the mass and radius of the maximum allowable static configuration. ©2000 The American Physical Society.en_HK
dc.format.extent114103 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.publisherAmerican Physical Society. The Journal's web site is located at http://prd.aps.orgen_HK
dc.relation.ispartofPhysical Review D - Particles, Fields, Gravitation and Cosmologyen_HK
dc.rightsPhysical Review D (Particles and Fields). Copyright © American Physical Society.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectPhysics - nuclear physicsen_HK
dc.titleApproximate mass and radius formulas for static and rotating strange starsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0556-2821&volume=62&issue=8&spage=083001:1&epage=9&date=2000&atitle=Approximate+mass+and+radius+formulas+for+static+and+rotating+strange+starsen_HK
dc.identifier.emailCheng, KS: hrspksc@hkucc.hku.hken_HK
dc.identifier.emailHarko, T: harko@hkucc.hku.hken_HK
dc.identifier.authorityCheng, KS=rp00675en_HK
dc.identifier.authorityHarko, T=rp01333en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1103/PhysRevD.62.083001en_HK
dc.identifier.scopuseid_2-s2.0-16644379696en_HK
dc.identifier.hkuros56350-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-16644379696&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume62en_HK
dc.identifier.issue8en_HK
dc.identifier.spage1en_HK
dc.identifier.epage8en_HK
dc.identifier.isiWOS:000089977200006-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridCheng, KS=9745798500en_HK
dc.identifier.scopusauthoridHarko, T=7006485783en_HK

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