MUTI-WAVELENGTH OBSERVATIONS OF GRB 111228A AND IMPLICATIONS FOR THE FIREBALL AND ITS ENVIRONMENT

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	MUTI-WAVELENGTH OBSERVATIONS OF GRB 111228A AND IMPLICATIONS FOR THE FIREBALL AND ITS ENVIRONMENT
	Xin, Li-Ping 1,2,3; Wang, Yuan-Zhu 2,3; Lin, Ting-Ting 2,3; Liang, En-Wei2,3 ; Lu, Hou-Jun 2,3; Zhong, Shu-Qing 2,3; Urata, Yuji 4,5; Zhao XH(赵晓红)6,7 ; Wu, Chao 1; Wei, Jian-Yan 1
刊名	ASTROPHYSICAL JOURNAL
	2016-02-01
卷号	817 期号:2
关键词	gamma-ray burst: individual (GRB. 130702A, GRB 111228A)
ISSN号	0004-637X
通讯作者	Xin, LP (reprint author), Chinese Acad Sci, Natl Astron Observ, Key Lab Space Astron & Technol, Beijing 100864, Peoples R China
产权排序	第六完成单位
英文摘要	Observations of very early multi-wavelength afterglows are critical to reveal the properties of the radiating fireball and its environment as well as the central engine of gamma-ray bursts (GRBs). We report our optical observations of GRB 111228A from 95 s to about 50 hr after the burst trigger and investigate its properties of the prompt gamma-rays and the ambient medium using our data and the data from the Swift and Fermi missions. Our joint optical and X-ray spectral fits to the afterglow data show that the ambient medium features a low dust-to-gas ratio. Incorporating the energy injection effect, our best fit to the afterglow light curves with the standard afterglow model via the Markov Chain Monte Carlo technique shows that epsilon(e) (6.9 +/- 0.3) 10(-2), epsilon(B) = (7.73 +/- 0.62) 10(-6), E-K = (6.32 +/- 0.86) 10(-6) erg, n = 0.100 +/- 0.014 cm(-3). The low medium density likely implies that the afterglow jet may be in a halo or in a hot ISM. A chromatic shallow decay segment observed in the optical and X-ray bands is well explained with the long-lasting energy injection from the central engine, which would be a magnetar with a period of about 1.92 ms inferred from the data. The E-p of its time-integrated prompt gamma-ray spectrum is similar to 26 KeV. Using the initial Lorentz factor (Gamma(0) = 476(237)(+)(225)) derived from our afterglow model fit, it is found that GRB 111228A satisfies the L-iso - E-p,E-z - Gamma(0) relation and bridges the typical GRBs and low luminosity GRBs in this relation.
学科主题	Astronomy & Astrophysics
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 ; HOST GALAXIES ; LIGHT CURVES ; COMPREHENSIVE ANALYSIS ; MILLISECOND PULSARS ; INTERSTELLAR-MEDIUM ; SPECTRAL EVOLUTION ; ENERGY INJECTION ; AFTERGLOW ONSET
收录类别	SCI
原文出处	http://iopscience.iop.org/article/10.3847/0004-637X/817/2/152/meta
语种	英语
WOS记录号	WOS:000369437900069
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/9332]
专题	云南天文台_丽江天文观测站（南方基地）云南天文台_中国科学院天体结构与演化重点实验室
作者单位	1.Key Laboratory of Space Astronomy and Technology, National Astronomical Observatories, Chinese Academy of Sciences, China 2.GXU-NAOC Center for Astrophysics and Space Sciences, Department of Physics, Guangxi University, Nanning 530004, China 3.Guangxi Key Laboratory for the Relativistic Astrophysics, Nanning 530004, China 4.Institute of Astronomy, National Central University, Chung-Li 32054, Taiwan 5.Academia Sinica Institute of Astronomy and Astrophysics, Taipei 106, Taiwan 6.Yunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, China 7.Key Laboratory for the Structure and Evolution of Celestial Bodies, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, China 8.Department of Mathematics and Science, National Taiwan Normal University, Lin-kou District, New Taipei City 24449, Taiwan
推荐引用方式 GB/T 7714	Xin, Li-Ping,Wang, Yuan-Zhu,Lin, Ting-Ting,et al. MUTI-WAVELENGTH OBSERVATIONS OF GRB 111228A AND IMPLICATIONS FOR THE FIREBALL AND ITS ENVIRONMENT[J]. ASTROPHYSICAL JOURNAL,2016,817(2).
APA	Xin, Li-Ping.,Wang, Yuan-Zhu.,Lin, Ting-Ting.,Liang, En-Wei.,Lu, Hou-Jun.,...&Deng, Jin-Song.(2016).MUTI-WAVELENGTH OBSERVATIONS OF GRB 111228A AND IMPLICATIONS FOR THE FIREBALL AND ITS ENVIRONMENT.ASTROPHYSICAL JOURNAL,817(2).
MLA	Xin, Li-Ping,et al."MUTI-WAVELENGTH OBSERVATIONS OF GRB 111228A AND IMPLICATIONS FOR THE FIREBALL AND ITS ENVIRONMENT".ASTROPHYSICAL JOURNAL 817.2(2016).