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Evidence of a two-component jet in the afterglow of GRB 070419A
Zheng WeiKang1,2; Deng JinSong1
AbstractA two-component jet model is proposed to explain the unusual afterglow of GRB 070419A. Regarding the optical light curve, a wide "jet" with an opening angle of >30-40 degrees is assumed to produce the late shallow decay, while the three early powerlaw segments must be caused by a narrow jet with an opening angle of similar to 2-4 degrees. Additional energy injections to both components are required. Late X-ray emission may come from either the wide jet or the narrow one. If the latter is correct, the jets may run into an ISM environment and the temporal index of the late energy injection may be q similar to 0.65.
KeywordGamma-rays: Bursts Gamma-rays: Observations
Indexed BySCI
WOS IDWOS:000280291800063
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zheng WeiKang,Deng JinSong. Evidence of a two-component jet in the afterglow of GRB 070419A[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2010,53:265-266.
APA Zheng WeiKang,&Deng JinSong.(2010).Evidence of a two-component jet in the afterglow of GRB 070419A.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,53,265-266.
MLA Zheng WeiKang,et al."Evidence of a two-component jet in the afterglow of GRB 070419A".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 53(2010):265-266.
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