On the magnetization of gamma-ray burst blast waves
Lemoine, Martin1; Li, Zhuo2,3; Wang, Xiang-Yu4,5; Lemoine, M (reprint author), UPMC, CNRS, Inst Astrophys Paris, 98 Bis Blvd Arago, F-75014 Paris, France.
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2013-11
卷号435期号:4页码:3009-3016
DOI10.1093/mnras/stt1494
收录类别SCI
关键词Acceleration Of Particles Shock Waves Gamma-ray Burst: General
摘要The origin of magnetic fields that permeate the blast waves of gamma-ray bursts (GRBs) is a long-standing problem. The present paper argues that in four GRBs revealing extended emission at > 100 MeV, with follow-up in the radio, optical and X-ray domains at later times, this magnetization can be described as the partial decay of the micro-turbulence that is generated in the shock precursor. Assuming that the bulk of the extended emission > 100 MeV can be interpreted as synchrotron emission of shock-accelerated electrons, we model the multi-wavelength light curves of GRB 090902B, GRB 090323, GRB 090328 and GRB 110731A, using a simplified then a full synchrotron calculation with power-law-decaying micro-turbulence epsilon(B) t(t)(alpha) (t denotes the time since injection through the shock, in the comoving blast frame). We find that these models point to a consistent value of the decay exponent -0.5 less than or similar to alpha(t) less than or similar to -0.4.
项目资助者INP (CNRS) ; NSFC(11273005,11273016,10973008,11033002) ; MOE PhD Programmes Foundation, China(20120001110064) ; CAS Open Research Programme of Key Laboratory for the Structure and Evolution of Celestial Objects ; 973 Programme(2009CB824800) ; Excellent Youth Foundation of Jiangsu Province(BK2012011)
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0035-8711
URL查看原文
WOS记录号WOS:000325774700018
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]HIGH-ENERGY EMISSION ; RELATIVISTIC COLLISIONLESS SHOCKS ; PARTICLE-ACCELERATION ; LIGHT CURVES ; AFTERGLOW OBSERVATIONS ; SPECTRAL COMPONENT ; GRB 090902B ; FERMI ; SYNCHROTRON ; PARAMETERS
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被引频次:29[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/114a53/9418
专题中国科学院天体结构与演化重点实验室
通讯作者Lemoine, M (reprint author), UPMC, CNRS, Inst Astrophys Paris, 98 Bis Blvd Arago, F-75014 Paris, France.
作者单位1.Institut d'Astrophysique de Paris, CNRS, UPMC, 98 bis boulevard Arago, F-75014 Paris, France
2.Department of Astronomy/Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, China
3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
4.School of Astronomy and Space Science, Nanjing University, Nanjing 210093, China
5.Key laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing 210093, China
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GB/T 7714
Lemoine, Martin,Li, Zhuo,Wang, Xiang-Yu,et al. On the magnetization of gamma-ray burst blast waves[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2013,435(4):3009-3016.
APA Lemoine, Martin,Li, Zhuo,Wang, Xiang-Yu,&Lemoine, M .(2013).On the magnetization of gamma-ray burst blast waves.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,435(4),3009-3016.
MLA Lemoine, Martin,et al."On the magnetization of gamma-ray burst blast waves".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 435.4(2013):3009-3016.
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