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GRB 060206: hints of precession of the central engine?
Liu, X. W.1,2,3; Wu, X. F.1,2,3,4; Lu, T.1,2,3
2008-08-01
Source PublicationASTRONOMY & ASTROPHYSICS
Volume487Issue:2Pages:503-508
AbstractAims. The high-redshift (z = 4.048) gamma-ray burst GRB 060206 showed unusual behavior, with a significant rebrightening by a factor of similar to 4 at about 3000 s after the burst. We argue that this rebrightening implies that the central engine became active again after the main burst produced by the first ejecta, then drove another more collimated jet-like ejecta with a larger viewing angle. The two ejecta both interacted with the ambient medium, giving rise to forward shocks that propagated into the ambient medium and reverse shocks that penetrated into the ejecta. The total emission was a combination of the emissions from the reverse- and forward-shocked regions. We discuss how this combined emission accounts for the observed rebrightening.
KeywordGamma Rays : Bursts Gamma Rays : Theory Gamma Rays : Observations
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1051/0004-6361:20078783
WOS KeywordGAMMA-RAY BURST ; LIGHT CURVES ; REVERSE SHOCK ; EARLY AFTERGLOWS ; PHYSICAL PARAMETERS ; WIND ENVIRONMENTS ; REFRESHED SHOCKS ; ACCRETION DISKS ; OPTICAL FLASHES ; DENSITY-JUMP
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000258327900017
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/11113
Collection院士文集_陆埮
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
3.Nanjing Univ, Joint Ctr Particle Nucl Phys & Cosmol Purple Mt O, Nanjing 210008, Peoples R China
4.CALTECH, Pasadena, CA 91125 USA
Recommended Citation
GB/T 7714
Liu, X. W.,Wu, X. F.,Lu, T.. GRB 060206: hints of precession of the central engine?[J]. ASTRONOMY & ASTROPHYSICS,2008,487(2):503-508.
APA Liu, X. W.,Wu, X. F.,&Lu, T..(2008).GRB 060206: hints of precession of the central engine?.ASTRONOMY & ASTROPHYSICS,487(2),503-508.
MLA Liu, X. W.,et al."GRB 060206: hints of precession of the central engine?".ASTRONOMY & ASTROPHYSICS 487.2(2008):503-508.
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