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TOWARD TIGHT GAMMA-RAY BURST LUMINOSITY RELATIONS
Qi, Shi1,2,3; Lu, Tan1,2,3
2012-04-01
Source PublicationASTROPHYSICAL JOURNAL
Volume749Issue:2
AbstractThe large scatters of luminosity relations of gamma-ray bursts (GRBs) have been one of the most important reasons preventing the extensive application of GRBs in cosmology. Many efforts have been made to seek tight luminosity relations. With the latest sample of 116 GRBs with measured redshift and spectral parameters, we investigate 6 two-dimensional (2D) correlations and 14 derived three-dimensional (3D) correlations of GRBs to explore the possibility of decreasing the intrinsic scatters of the luminosity relations of GRBs. We find the 3D correlation of E-peak-tau(RT)-L to be evidently tighter (at the 2 sigma confidence level) than its corresponding 2D correlations, i.e., the E-peak-L and tau(RT)-L correlations. In addition, the coefficients before the logarithms of E-peak and tau(RT) in the Epeak-tRT-L correlation are almost exact opposites of each other. Inputting this situation as a prior reduces the relation to L alpha (E'(peak)/tau'(RT))(0.842 + 0.064), where E'(peak) and tau'(RT) denote the peak energy and minimum rise time in the GRB rest frame. We discuss how our findings can be interpreted/understood in the framework of the definition of the luminosity (energy released in units of time). Our argument about the connection between the luminosity relations of GRBs and the definition of the luminosity provides a clear direction for exploring tighter luminosity relations of GRBs in the future.
KeywordGamma-ray Burst: General
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/0004-637X/749/2/99
WOS KeywordDARK ENERGY ; COSMOLOGICAL PARAMETERS ; STANDARD CANDLES ; PEAK LUMINOSITY ; HUBBLE DIAGRAM ; LIGHT CURVES ; REDSHIFT ; EVOLUTION ; SUPERNOVAE ; DISCOVERY
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000302785700004
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Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/10970
Collection院士文集_陆埮
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
2.Nanjing Univ, Joint Ctr Particle Nucl Phys & Cosmol, Purple Mt Observ, Nanjing 210093, Jiangsu, Peoples R China
3.Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Nanjing 210008, Peoples R China
Recommended Citation
GB/T 7714
Qi, Shi,Lu, Tan. TOWARD TIGHT GAMMA-RAY BURST LUMINOSITY RELATIONS[J]. ASTROPHYSICAL JOURNAL,2012,749(2).
APA Qi, Shi,&Lu, Tan.(2012).TOWARD TIGHT GAMMA-RAY BURST LUMINOSITY RELATIONS.ASTROPHYSICAL JOURNAL,749(2).
MLA Qi, Shi,et al."TOWARD TIGHT GAMMA-RAY BURST LUMINOSITY RELATIONS".ASTROPHYSICAL JOURNAL 749.2(2012).
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