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GRB 110530A: PECULIAR BROAD BUMP AND DELAYED PLATEAU IN EARLY OPTICAL AFTERGLOWS
Zhong, Shu-Qing1,2; Xin, Li-Ping3; Liang, En-Wei1,2,3,4; Wei, Jian-Yan3; Urata, Yuji5,6; Huang, Kui-Yun7; Qiu, Yu-Lei3; Deng, Can-Min1,2; Wang, Yuan-Zhu4; Deng, Jin-Song3
2016-11-01
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume831Issue:1Pages:8
Corresponding AuthorXin, Li-Ping(xlp@bao.ac.cn)
AbstractWe report our very early optical observations of GRB 110530A and investigate its jet properties together with its X-ray afterglow data. A peculiar broad onset bump followed by a plateau is observed in its early R band afterglow light curve. The optical data in the other bands and the X-ray data are well consistent with the temporal feature of the R band light curve. Our joint spectral fits of the optical and X-ray data show that they are in the same regime, with a photon index of similar to 1.70. The optical and X-ray afterglow light curves are well fitted with the standard external shock model by considering a delayed energy injection component. Based on our modeling results, we find that the radiative efficiency of the gamma-ray burst jet is similar to 1% and the magnetization parameter of the afterglow jet is <0.04 with a derived extremely low is an element of(B) ( the ratio of shock energy to the magnetic field) of (1.64 +/- 0.25) x 10(-6). These results indicate that the jet may be matter dominated. A discussion on delayed energy injection from the accretion of the late fall-back material of its pre-supernova star is also presented.
Keywordgamma-ray burst: general
DOI10.3847/0004-637X/831/1/5
WOS KeywordGAMMA-RAY BURST ; SWIFT XRT DATA ; CONTINUOUS ENERGY INJECTION ; INTERNAL-SHOCK MODEL ; COMPREHENSIVE ANALYSIS ; PHYSICAL PARAMETERS ; MILLISECOND PULSARS ; LIGHT CURVES ; FOLLOW-UP ; EMISSION
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000400472700002
PublisherIOP PUBLISHING LTD
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Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/22845
Collection中国科学院紫金山天文台
Corresponding AuthorXin, Li-Ping
Affiliation1.Guangxi Univ, Dept Phys, GXU NAOC Ctr Astrophys & Space Sci, Nanning 530004, Peoples R China
2.Guangxi Key Lab Relativist Astrophys, Nanning 530004, Peoples R China
3.Chinese Acad Sci, Key Lab Space Astron & Technol, Natl Astron Observ, Beijing 100012, Peoples R China
4.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
5.Natl Cent Univ, Inst Astron, Chungli 32054, Taiwan
6.Acad Sinica, Inst Astron & Astrophys, Taipei 106, Taiwan
7.Natl Taiwan Normal Univ, Dept Math & Sci, New Taipei 24449, Taiwan
Recommended Citation
GB/T 7714
Zhong, Shu-Qing,Xin, Li-Ping,Liang, En-Wei,et al. GRB 110530A: PECULIAR BROAD BUMP AND DELAYED PLATEAU IN EARLY OPTICAL AFTERGLOWS[J]. ASTROPHYSICAL JOURNAL,2016,831(1):8.
APA Zhong, Shu-Qing.,Xin, Li-Ping.,Liang, En-Wei.,Wei, Jian-Yan.,Urata, Yuji.,...&Deng, Jin-Song.(2016).GRB 110530A: PECULIAR BROAD BUMP AND DELAYED PLATEAU IN EARLY OPTICAL AFTERGLOWS.ASTROPHYSICAL JOURNAL,831(1),8.
MLA Zhong, Shu-Qing,et al."GRB 110530A: PECULIAR BROAD BUMP AND DELAYED PLATEAU IN EARLY OPTICAL AFTERGLOWS".ASTROPHYSICAL JOURNAL 831.1(2016):8.
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