Comparison between the time-integrated spectrum and the peak time spectrum of gamma-ray bursts and possible implications

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	Comparison between the time-integrated spectrum and the peak time spectrum of gamma-ray bursts and possible implications
	Lyu Fen 1,2,3; Wang YuanZhu 1; Liang YunFeng 1,2; Lin TingTing 1; Hu YouDong 1; Liang EnWei1,3
刊名	SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
	2015-03
卷号	58 期号:3
关键词	gamma-ray sources gamma-ray bursts gamma-rays: astronomical observations
ISSN号	1674-7348
通讯作者	Liang, EW (reprint author), Guangxi Univ, Dept Phys, Nanning 530004, Peoples R China.
英文摘要	The mono-frequency peak luminosity and the corresponding photon energy of the time-integrated (L-p(s), E-p(s)) and peak time (L-p(t), E-p(t)) nu f(nu) spectra were derived for a sample of 38 redshift-known Fermi GRBs by fitting the spectra with the Band function. It was found that E-p(t) is generally consistent with E-p(s), and L-p(t) is averagely three times larger than L-p(s). The slope of the L-p(t) - E-p(t), relation was consistent with that of the L-p(s) - E-p(s) relation. The photon indices in the peak time spectrum, particularly, the index of the low energy end was, were statistically larger than that in the time-integrated spectrum. These results indicate that L-p(s) and E-p(s) are dominated by L-p(t) and E-p(t) respectively. The difference of the spectral indices between the time-integrated and peak time spectra may be because of the overlap effect of a series of time-resolved spectra within a GRB. Our simulations, which were based on the observed spectral evolution and correlation between the energy flux and the peak energy within individual GRBs support our speculations. The L-p(t) - E-p(t) relation may be less contaminated by the overlap effect, and it would may be an intrinsic feature of radiation physics.
学科主题	Physics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Physics, Multidisciplinary
研究领域[WOS]	Physics
关键词[WOS]	E-P RELATION ; PROMPT EMISSION ; FERMI OBSERVATIONS ; GRB 080916C ; COMPREHENSIVE ANALYSIS ; SWIFT ERA ; ENERGY ; LUMINOSITY ; MODELS ; RADIATION
收录类别	SCI
原文出处	http://link.springer.com/article/10.1007%2Fs11433-014-5575-1
语种	英语
WOS记录号	WOS:000349813600012
公开日期	2016-06-01
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/9375]
专题	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.Department of Physics and GXU-NAOC Center for Astrophysics and Space Sciences, Guangxi University, Nanning, 530004, China 2.Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing, 210008, China 3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, 650011, China
推荐引用方式 GB/T 7714	Lyu Fen,Wang YuanZhu,Liang YunFeng,et al. Comparison between the time-integrated spectrum and the peak time spectrum of gamma-ray bursts and possible implications[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2015,58(3).
APA	Lyu Fen,Wang YuanZhu,Liang YunFeng,Lin TingTing,Hu YouDong,&Liang EnWei.(2015).Comparison between the time-integrated spectrum and the peak time spectrum of gamma-ray bursts and possible implications.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,58(3).
MLA	Lyu Fen,et al."Comparison between the time-integrated spectrum and the peak time spectrum of gamma-ray bursts and possible implications".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 58.3(2015).