GRB 110530A: PECULIAR BROAD BUMP AND DELAYED PLATEAU IN EARLY OPTICAL AFTERGLOWS

	GRB 110530A: PECULIAR BROAD BUMP AND DELAYED PLATEAU IN EARLY OPTICAL AFTERGLOWS
	Zhong, Shu-Qing 1,2; Xin, Li-Ping3 ; Liang, En-Wei 1,2,3,4; Wei, Jian-Yan3 ; Urata, Yuji 5,6; Huang, Kui-Yun 7; Qiu, Yu-Lei3 ; Deng, Can-Min 1,2; Wang, Yuan-Zhu 4; Deng, Jin-Song 3
刊名	ASTROPHYSICAL JOURNAL
	2016-11-01
卷号	831 期号:1
关键词	gamma-ray burst: general
英文摘要	We 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.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	GAMMA-RAY BURST ; SWIFT XRT DATA ; CONTINUOUS ENERGY INJECTION ; INTERNAL-SHOCK MODEL ; COMPREHENSIVE ANALYSIS ; PHYSICAL PARAMETERS ; MILLISECOND PULSARS ; LIGHT CURVES ; FOLLOW-UP ; EMISSION
收录类别	SCI
语种	英语
WOS记录号	WOS:000400472700002
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/8850]
专题	国家天文台_空间科学研究部
作者单位	1.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
推荐引用方式 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).
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).
MLA	Zhong, Shu-Qing,et al."GRB 110530A: PECULIAR BROAD BUMP AND DELAYED PLATEAU IN EARLY OPTICAL AFTERGLOWS".ASTROPHYSICAL JOURNAL 831.1(2016).