A New Measurement of the Spectral Lag of Gamma-Ray Bursts and its Implications for Spectral Evolution Behaviors

doi:10.3847/1538-4357/aa7d01

	A New Measurement of the Spectral Lag of Gamma-Ray Bursts and its Implications for Spectral Evolution Behaviors
	Feng, Huan-Xue 2,7; Zhang, Meng 7; Xu, Dong 2; Wang, Xue 7; Xi, Bao-Jia 7; Yu, Bang-Yao 7; Zhang, Xi 7; Cheng, Ye-Hao 7; Wu, Xue-Feng 1,3,6; Wang, Fu-Ri 7
刊名	ASTROPHYSICAL JOURNAL
	2017-08-01
卷号	844 期号:2
关键词	Gamma-ray Burst: General Methods: Data Analysis Radiation Mechanisms: Nonthermal Supporting Material: Figure Set Machine-readable Table
DOI	10.3847/1538-4357/aa7d01
文献子类	Article
英文摘要	We carry out a systematical study of the spectral lag properties of 50 single-pulsed gamma-ray bursts (GRBs) detected by the Fermi Gamma-Ray Burst Monitor. By dividing the light curves into multiple consecutive energy channels, we provide a new measurement of the spectral lag that is independent of energy channel selections. We perform a detailed statistical study of our new measurements. We find two similar power-law energy dependencies of both the pulse arrival time and pulse width. Our new results on the power-law indices would favor the relativistic geometric effects for the origin of spectral lag. However, a complete theoretical framework that can fully account for the diverse energy dependencies of both arrival time and pulse width revealed in this work is still lacking. We also study the spectral evolution behaviors of the GRB pulses. We find that a GRB pulse with negligible spectral lag would usually have a shorter pulse duration and would appear to have a "hardness-intensity tracking" behavior, and a GRB pulse with a significant spectral lag would usually have a longer pulse duration and would appear to have a "hard-to-soft" behavior.
WOS关键词	GRB PROMPT EMISSION ; 1ST 4 YEARS ; LUMINOSITY RELATION ; COMPREHENSIVE ANALYSIS ; ENERGY-DEPENDENCE ; PHYSICAL ORIGINS ; PEAK LUMINOSITY ; PULSES ; LONG ; CATALOG
WOS研究方向	Astronomy & Astrophysics
语种	英语
WOS记录号	WOS:000406652900004
资助机构	National Basic Research Program ("973" Program) of China(2014CB845800) ; National Basic Research Program ("973" Program) of China(2014CB845800) ; National Natural Science Foundation of China(11103083 ; National Natural Science Foundation of China(11103083 ; Chinese Academy of Sciences(XDB23000000 ; Chinese Academy of Sciences(XDB23000000 ; NSFC-ISF(11361140349) ; NSFC-ISF(11361140349) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Israel Science Foundation ; Israel Science Foundation ; Spanish Ministry Projects(AYA 2012-39727-C03-01 ; Spanish Ministry Projects(AYA 2012-39727-C03-01 ; Youth Innovation Promotion Association(2011231) ; Youth Innovation Promotion Association(2011231) ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; 11433009 ; 11433009 ; QYZDB-SSW-SYS005) ; QYZDB-SSW-SYS005) ; AYA2015-71718-R) ; AYA2015-71718-R) ; 11673068 ; 11673068 ; 11533003) ; 11533003) ; National Basic Research Program ("973" Program) of China(2014CB845800) ; National Basic Research Program ("973" Program) of China(2014CB845800) ; National Natural Science Foundation of China(11103083 ; National Natural Science Foundation of China(11103083 ; Chinese Academy of Sciences(XDB23000000 ; Chinese Academy of Sciences(XDB23000000 ; NSFC-ISF(11361140349) ; NSFC-ISF(11361140349) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Israel Science Foundation ; Israel Science Foundation ; Spanish Ministry Projects(AYA 2012-39727-C03-01 ; Spanish Ministry Projects(AYA 2012-39727-C03-01 ; Youth Innovation Promotion Association(2011231) ; Youth Innovation Promotion Association(2011231) ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; 11433009 ; 11433009 ; QYZDB-SSW-SYS005) ; QYZDB-SSW-SYS005) ; AYA2015-71718-R) ; AYA2015-71718-R) ; 11673068 ; 11673068 ; 11533003) ; 11533003)
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/20076]
专题	国家天文台_空间科学研究部
作者单位	1.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Key Lab Space Astron & Technol, Natl Astron Observ, Beijing 100012, Peoples R China 3.Nanjing Univ, Joint Ctr Particle Nucl Phys & Cosmol, Purple Mt Observ, Nanjing 210008, Peoples R China 4.Scientist Support LLC, Madsion, AL 35758 USA 5.CSIC, IAA, POB 03004, E-18080 Granada, Spain 6.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China 7.Hebei Normal Univ, Dept Space Sci & Astron, Shijiazhuang 050024, Hebei, Peoples R China
推荐引用方式 GB/T 7714	Feng, Huan-Xue,Zhang, Meng,Xu, Dong,et al. A New Measurement of the Spectral Lag of Gamma-Ray Bursts and its Implications for Spectral Evolution Behaviors[J]. ASTROPHYSICAL JOURNAL,2017,844(2).
APA	Feng, Huan-Xue.,Zhang, Meng.,Xu, Dong.,Wang, Xue.,Xi, Bao-Jia.,...&Shao, Lang.(2017).A New Measurement of the Spectral Lag of Gamma-Ray Bursts and its Implications for Spectral Evolution Behaviors.ASTROPHYSICAL JOURNAL,844(2).
MLA	Feng, Huan-Xue,et al."A New Measurement of the Spectral Lag of Gamma-Ray Bursts and its Implications for Spectral Evolution Behaviors".ASTROPHYSICAL JOURNAL 844.2(2017).