PMO OpenIR  > 宇宙伽马暴、中子星及相关物理研究团组
Can the bump be observed in the early afterglow of gamma-ray bursts with X-ray line emission features?
Gao, WH; Wei, DM
2004-03-20
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume604Issue:1Pages:312-316
AbstractExtremely powerful emission lines are observed in the X-ray afterglow of several gamma-ray bursts (GRBs). The energy contained in the illuminatingcontinuum that is responsible for the line production exceeds 1051 ergs, much higher than that of the collimated GRBs, constraining the models that might explain the production of X-ray emission lines. In this paper, we argue that this energy can come from a continuous postburst outflow. Focusing on a central engine of highly magnetized millisecond pulsar or magnetar, we find that the afterglow can be affected by the illuminating continuum, and therefore a distinct achromatic bump can be observed in the early afterglow light curves. With the luminosity of the continuous outflow that produces the line emission, we define the upper limit of the time when the bump feature appears. We argue that the reason why the achromatic bumps have not been detected so far is that the bumps appear at too early a time to be observed.
KeywordGamma Rays : Bursts Radiation Mechanisms : General
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordOPTICAL AFTERGLOW ; ENERGY RESERVOIR ; FLUID-DYNAMICS ; BLAST WAVES ; XMM-NEWTON ; IRON LINE ; GRB-020813 ; GRB-030227 ; INJECTION ; SIGNATURE
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000220301000026
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/7752
Collection宇宙伽马暴、中子星及相关物理研究团组
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Gao, WH,Wei, DM. Can the bump be observed in the early afterglow of gamma-ray bursts with X-ray line emission features?[J]. ASTROPHYSICAL JOURNAL,2004,604(1):312-316.
APA Gao, WH,&Wei, DM.(2004).Can the bump be observed in the early afterglow of gamma-ray bursts with X-ray line emission features?.ASTROPHYSICAL JOURNAL,604(1),312-316.
MLA Gao, WH,et al."Can the bump be observed in the early afterglow of gamma-ray bursts with X-ray line emission features?".ASTROPHYSICAL JOURNAL 604.1(2004):312-316.
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