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Optical afterglows of short gamma-ray bursts and GRB 040924
Fan, YZ; Zhang, B; Kobayashi, S; Meszaros, P
AbstractShort-duration gamma-ray bursts (GRBs; <= 2 s) have remained a mystery due to the lack of afterglow detection until recently. The models to interpret short GRBs invoke distinct progenitor scenarios. Here we present a generic analysis of short GRB afterglows and calculate the optical light curves of short GRBs within the framework of different progenitor models. We show that all these optical afterglows are bright enough to be detected by the Ultraviolet and Optical Telescope (UVOT) on board the Swift observatory and that different models could be distinguished with a well-monitored light curve. We also model the afterglow data of the recently discovered short burst GRB 040924. We find that the limited data are consistent with a low medium density environment, which is consistent with the preconcept of the compact star merger progenitor model, although the models with a collapsar progenitor are not ruled out.
KeywordGamma Rays : Bursts Ism : Jets And Outflows Radiation Mechanisms : Nonthermal
Indexed BySCI
WOS IDWOS:000230817300029
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Document Type期刊论文
Affiliation1.Univ Nevada, Dept Phys, Las Vegas, NV 89154 USA
2.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
4.Penn State Univ, Dept Astron & Astrophys, Davey Lab 525, University Pk, PA 16802 USA
5.Penn State Univ, Dept Phys, Davey Lab 104, University Pk, PA 16802 USA
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GB/T 7714
Fan, YZ,Zhang, B,Kobayashi, S,et al. Optical afterglows of short gamma-ray bursts and GRB 040924[J]. ASTROPHYSICAL JOURNAL,2005,628(2):867-872.
APA Fan, YZ,Zhang, B,Kobayashi, S,&Meszaros, P.(2005).Optical afterglows of short gamma-ray bursts and GRB 040924.ASTROPHYSICAL JOURNAL,628(2),867-872.
MLA Fan, YZ,et al."Optical afterglows of short gamma-ray bursts and GRB 040924".ASTROPHYSICAL JOURNAL 628.2(2005):867-872.
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