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Article: Minimum massradius ratio for charged gravitational objects
Title  Minimum massradius ratio for charged gravitational objects 

Authors  
Issue Date  2007 
Publisher  Springer New York LLC. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=00017701 
Citation  General Relativity and Gravitation, 2007, v. 39 n. 6, p. 757775 How to Cite? 
Abstract  We rigorously prove that for compact charged general relativistic objects there is a lower bound for the massradius ratio. This result follows from the same Buchdahl type inequality for charged objects, which has been extensively used for the proof of the existence of an upper bound for the massradius ratio. The effect of the vacuum energy (a cosmological constant) on the minimum mass is also taken into account. Several bounds on the total charge, mass and the vacuum energy for compact charged objects are obtained from the study of the Ricci scalar invariants. The total energy (including the gravitational one) and the stability of the objects with minimum massradius ratio is also considered, leading to a representation of the mass and radius of the charged objects with minimum massradius ratio in terms of the charge and vacuum energy only. © Springer Science+Business Media, LLC 2007. 
Persistent Identifier  http://hdl.handle.net/10722/91794 
ISSN  2015 Impact Factor: 1.668 2015 SCImago Journal Rankings: 0.734 
ISI Accession Number ID  
References 
DC Field  Value  Language 

dc.contributor.author  Böhmer, CG  en_HK 
dc.contributor.author  Harko, T  en_HK 
dc.date.accessioned  20100917T10:26:49Z   
dc.date.available  20100917T10:26:49Z   
dc.date.issued  2007  en_HK 
dc.identifier.citation  General Relativity and Gravitation, 2007, v. 39 n. 6, p. 757775  en_HK 
dc.identifier.issn  00017701  en_HK 
dc.identifier.uri  http://hdl.handle.net/10722/91794   
dc.description.abstract  We rigorously prove that for compact charged general relativistic objects there is a lower bound for the massradius ratio. This result follows from the same Buchdahl type inequality for charged objects, which has been extensively used for the proof of the existence of an upper bound for the massradius ratio. The effect of the vacuum energy (a cosmological constant) on the minimum mass is also taken into account. Several bounds on the total charge, mass and the vacuum energy for compact charged objects are obtained from the study of the Ricci scalar invariants. The total energy (including the gravitational one) and the stability of the objects with minimum massradius ratio is also considered, leading to a representation of the mass and radius of the charged objects with minimum massradius ratio in terms of the charge and vacuum energy only. © Springer Science+Business Media, LLC 2007.  en_HK 
dc.language  eng  en_HK 
dc.publisher  Springer New York LLC. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=00017701  en_HK 
dc.relation.ispartof  General Relativity and Gravitation  en_HK 
dc.title  Minimum massradius ratio for charged gravitational objects  en_HK 
dc.type  Article  en_HK 
dc.identifier.email  Harko, TC:harko@hkucc.hku.hk  en_HK 
dc.identifier.authority  Harko, TC=rp1333  en_HK 
dc.description.nature  link_to_subscribed_fulltext   
dc.identifier.doi  10.1007/s1071400704173  en_HK 
dc.identifier.scopus  eid_2s2.034249060407  en_HK 
dc.relation.references  http://www.scopus.com/mlt/select.url?eid=2s2.034249060407&selection=ref&src=s&origin=recordpage  en_HK 
dc.identifier.volume  39  en_HK 
dc.identifier.issue  6  en_HK 
dc.identifier.spage  757  en_HK 
dc.identifier.epage  775  en_HK 
dc.identifier.eissn  15729532   
dc.identifier.isi  WOS:000246612300003   
dc.identifier.citeulike  1433440   