GAMMA-RAY BURST AFTERGLOWS AS ANALOGS OF HIGH-FREQUENCY-PEAKED BL LAC OBJECTS

	GAMMA-RAY BURST AFTERGLOWS AS ANALOGS OF HIGH-FREQUENCY-PEAKED BL LAC OBJECTS
	Wang, J.; Wei, J. Y.
刊名	ASTROPHYSICAL JOURNAL LETTERS
	2011
卷号	726 期号:1
关键词	BL Lacertae objects: general gamma-ray burst: general methods: statistical
英文摘要	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.
收录类别	SCI
语种	英语
WOS记录号	WOS:000285296600004
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/7838]
专题	国家天文台_空间科学研究部
作者单位	Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
推荐引用方式 GB/T 7714	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).