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COSMOLOGICAL TIME DILATION IN DURATIONS OF SWIFT LONG GAMMA-RAY BURSTS
Zhang, Fu-Wen1,2; Fan, Yi-Zhong1; Shao, Lang3; Wei, Da-Ming1
2013-11-20
Source PublicationASTROPHYSICAL JOURNAL LETTERS
Volume778Issue:1
AbstractCosmological time dilation is a fundamental phenomenon in an expanding universe, which stresses that both the duration and wavelength of the emitted light from a distant object at the redshift z will be dilated by a factor of 1 + z at the observer. By using a sample of 139 Swift long gamma-ray bursts with known redshift (z <= 8.2), we measure the observed duration (T-90) in the observed energy range between 140/(1 + z) keV and 350/(1 + z) keV, corresponding to a fixed energy range of 140-350 keV in the rest frame. We obtain a significant correlation between the duration and the factor 1 + z, i.e., T-90 = 10.5(1 + z) (0.94 +/- 0.26), which is consistent with that expected from the cosmological time dilation effect.
KeywordGamma-ray Burst: General Methods: Data Analysis
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/2041-8205/778/1/L11
WOS KeywordLIGHT CURVES ; COMPLETE SAMPLE ; ENERGY ; CLASSIFICATION ; GRBS ; LAG ; SIGNATURE ; EVOLUTION
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000327116700011
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/15514
Collection暗物质和空间天文实验室
Affiliation1.Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
2.Guilin Univ Technol, Coll Sci, Guilin 541004, Peoples R China
3.Hebei Normal Univ, Dept Space Sci & Astron, Shijiazhuang 050024, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Fu-Wen,Fan, Yi-Zhong,Shao, Lang,et al. COSMOLOGICAL TIME DILATION IN DURATIONS OF SWIFT LONG GAMMA-RAY BURSTS[J]. ASTROPHYSICAL JOURNAL LETTERS,2013,778(1).
APA Zhang, Fu-Wen,Fan, Yi-Zhong,Shao, Lang,&Wei, Da-Ming.(2013).COSMOLOGICAL TIME DILATION IN DURATIONS OF SWIFT LONG GAMMA-RAY BURSTS.ASTROPHYSICAL JOURNAL LETTERS,778(1).
MLA Zhang, Fu-Wen,et al."COSMOLOGICAL TIME DILATION IN DURATIONS OF SWIFT LONG GAMMA-RAY BURSTS".ASTROPHYSICAL JOURNAL LETTERS 778.1(2013).
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