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GAMMA-RAY BURST AFTERGLOWS AS ANALOGS OF HIGH-FREQUENCY-PEAKED BL LAC OBJECTS
Wang, J.; Wei, J. Y.
2011
发表期刊ASTROPHYSICAL JOURNAL LETTERS
卷号726期号:1
摘要The spectral properties from radio-to-optical bands are compared between the 18 optically bright gamma-ray burst (GRB) afterglows and the well-established power-spectrum sequence in blazars. The comparison shows that the afterglows are in well agreement with the well-known blazar sequence (i.e., the nu L-nu (5 GHz)-alpha(RO) correlation, where alpha(RO) is the broadband spectral slope from radio-to-optical bands). The afterglows are, however, clustered at the low-luminosity end of the sequence, which is typically occupied by high-frequency-peaked BL Lac objects (HBLs). The correlation suggests that GRB afterglows share a similar emission process with HBLs. We further identify a deviation at a significance level larger than 2 sigma from the sequence for three typical optically " dark" bursts. The deviation favors a heavy extinction in optical bands for the "dark" bursts. The extinction AV is estimated to be larger than 0.5-0.6 mag from the nu L-nu (5 GHz)-alpha(RO) sequence.
关键词Bl Lacertae Objects: General Gamma-ray Burst: General Methods: Statistical
DOI10.1088/2041-8205/726/1/L4
收录类别SCI
语种英语
WOS记录号WOS:000285296600004
引用统计
文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/7838
专题空间科学研究部
作者单位Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
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Wang, J.,Wei, J. Y.. GAMMA-RAY BURST AFTERGLOWS AS ANALOGS OF HIGH-FREQUENCY-PEAKED BL LAC OBJECTS[J]. ASTROPHYSICAL JOURNAL LETTERS,2011,726(1).
APA Wang, J.,&Wei, J. Y..(2011).GAMMA-RAY BURST AFTERGLOWS AS ANALOGS OF HIGH-FREQUENCY-PEAKED BL LAC OBJECTS.ASTROPHYSICAL JOURNAL LETTERS,726(1).
MLA Wang, J.,et al."GAMMA-RAY BURST AFTERGLOWS AS ANALOGS OF HIGH-FREQUENCY-PEAKED BL LAC OBJECTS".ASTROPHYSICAL JOURNAL LETTERS 726.1(2011).
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