X-ray afterglows of GRBs 050318 and 060124 and their external shock origin

doi:10.1088/1009-9271/7/4/07

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	X-ray afterglows of GRBs 050318 and 060124 and their external shock origin
	Zhang J(张晋)1,4 ; Qin, YP 2,3; Zhang FW(张富文)1,4 ; Zhang BB(张彬彬)1,4 ; Zhang, J (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
发表期刊	CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
	2007
卷号	7 期号:4 页码:516-520
DOI	10.1088/1009-9271/7/4/07
产权排序	第1完成单位
收录类别	SCI
关键词	Gamma-rays Bursts-individual : Grb 050318 Grb 060124
摘要	The observations with Swift X-ray telescope (XRT) challenge the conventional gamma-ray burst model in many aspects. The XRT light curves are generally composed of four consecutive segments, i.e., a steep decay segment, a shallow decay segment, a normal decay segment, a jet-like steep decay segment, and sometimes erratic flares as well. The physical origin of the X-ray emission is highly debatable. We focus here on the physical origin of the X-ray emissions of GRBs 050318 and 060124. We present the XRT light curves and spectra of the two bursts. The light curve decay slopes of the two bursts are normal, and their relations to the spectral indices are consistent with the prediction of the standard forward shock model. The multi-wavelength light curves at 0.5 keV, 1.0 keV, 2.0 keV and 4.0 keV can be reproduced by this model with an isotropic kinetic energy E-k = 2.2 x 10(52) erg, epsilon(e) = 0.04, epsilon(B) = 0.01 for GRB 050318 and E-k = 4.2 x 10(53) erg, epsilon(e) = 0.05, epsilon(B) = 0.01 for GRB 060124. These facts suggest that the normal decay phases of the X-rays for the two bursts are of the forward shock origin.
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	1009-9271
URL	查看原文
归档日期	2007-08-10
WOS记录号	WOS:000249365900007
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	BURST AFTERGLOWS ; LIGHT CURVES ; THEORETICAL IMPLICATIONS ; SPECTRAL LAGS ; FLARES ; EMISSION ; MODEL ; GRBS ; PROFILES ; ENERGY
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ynao.ac.cn/handle/114a53/4958
专题	高能天体物理研究组
通讯作者	Zhang, J (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
作者单位	1.National Astronomical Observatories / Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011 2.Center for Astrophysics of Guangzhou University, Guangzhou 510006 3.Physics Department, Guangxi University, Nanning 530004 4.Graduate School of Chinese Academy of Sciences, Beijing 100049
第一作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	Zhang J,Qin, YP,Zhang FW,et al. X-ray afterglows of GRBs 050318 and 060124 and their external shock origin[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2007,7(4):516-520.
APA	Zhang J,Qin, YP,Zhang FW,Zhang BB,&Zhang, J .(2007).X-ray afterglows of GRBs 050318 and 060124 and their external shock origin.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,7(4),516-520.
MLA	Zhang J,et al."X-ray afterglows of GRBs 050318 and 060124 and their external shock origin".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 7.4(2007):516-520.

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