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IS THE LATE NEAR-INFRARED BUMP IN SHORT-HARD GRB 130603B DUE TO THE LI-PACZYNSKI KILONOVA?
Jin, Zhi-Ping1; Xu, Dong2; Fan, Yi-Zhong1; Wu, Xue-Feng3; Wei, Da-Ming1
2013-09-20
Source PublicationASTROPHYSICAL JOURNAL LETTERS
ISSN2041-8205
Volume775Issue:1Pages:0
Corresponding AuthorJin, ZP (reprint author), Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China. Email: yzfan@pmo.ac.cn
AbstractShort-hard gamma-ray bursts (GRBs) are widely believed to be produced by the merger of two binary compact objects, specifically by two neutron stars or by a neutron star orbiting a black hole. According to the Li-Paczynski kilonova model, the merger would launch sub-relativistic ejecta and a near-infrared/optical transient would then occur, lasting up to days, which is powered by the radioactive decay of heavy elements synthesized in the ejecta. The detection of a late bump using the Hubble Space Telescope (HST) in the near-infrared afterglow light curve of the short-hard GRB 130603B is indeed consistent with such a model. However, as shown in this Letter, the limited HST near-infrared light curve behavior can also be interpreted as the synchrotron radiation of the external shock driven by a wide mildly relativistic outflow. In such a scenario, the radio emission is expected to peak with a flux of similar to 100 mu Jy, which is detectable for current radio arrays. Hence, the radio afterglow data can provide complementary evidence on the nature of the bump in GRB 130603B. It is worth noting that good spectroscopy during the bump phase in short-hard bursts can test the validity of either model above, analogous to spectroscopy of broad-lined Type Ic supernova in long-soft GRBs.
KeywordGamma-ray Burst: General Radiation Mechanisms: Non-thermal
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/2041-8205/775/1/L19
WOS KeywordGAMMA-RAY BURSTS ; NEUTRON-STAR MERGERS ; COMPACT OBJECT MERGERS ; AFTERGLOW LIGHT CURVES ; EARLY X-RAY ; 2-COMPONENT JET ; FLAT SEGMENT ; NUCLEOSYNTHESIS ; MODEL ; MAGNETAR
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000324340500019
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/9781
Collection暗物质和空间天文实验室
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China
2.Univ Copenhagen, Niels Bohr Inst, Dark Cosmol Ctr, DK-2100 Copenhagen, Denmark
3.Chinese Acad Sci, Purple Mt Observ, Chinese Ctr Antarctic Astron, Nanjing 210008, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Jin, Zhi-Ping,Xu, Dong,Fan, Yi-Zhong,et al. IS THE LATE NEAR-INFRARED BUMP IN SHORT-HARD GRB 130603B DUE TO THE LI-PACZYNSKI KILONOVA?[J]. ASTROPHYSICAL JOURNAL LETTERS,2013,775(1):0.
APA Jin, Zhi-Ping,Xu, Dong,Fan, Yi-Zhong,Wu, Xue-Feng,&Wei, Da-Ming.(2013).IS THE LATE NEAR-INFRARED BUMP IN SHORT-HARD GRB 130603B DUE TO THE LI-PACZYNSKI KILONOVA?.ASTROPHYSICAL JOURNAL LETTERS,775(1),0.
MLA Jin, Zhi-Ping,et al."IS THE LATE NEAR-INFRARED BUMP IN SHORT-HARD GRB 130603B DUE TO THE LI-PACZYNSKI KILONOVA?".ASTROPHYSICAL JOURNAL LETTERS 775.1(2013):0.
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