GeV emission from neutron-rich internal shocks of some long gamma-ray bursts

CORC > 紫金山天文台 > 中国科学院紫金山天文台 > 宇宙伽马暴、中子星及相关物理研究团组

	GeV emission from neutron-rich internal shocks of some long gamma-ray bursts
	Xue, Rong-Rong1,2 ; Fan, Yi-Zhong1,3 ; Wei, Da-Ming1,4,5
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2008-09-01
卷号	389 期号:1 页码:321-324
关键词	radiation mechanisms: non-thermal ISM: jets and outflows gamma rays: bursts
ISSN号	0035-8711
英文摘要	In the neutron-rich internal shocks model for gamma-ray bursts (GRBs), the Lorentz factors (LFs) of ion shells are variable, and so are the LFs of accompanying neutron shells. For slow neutron shells with a typical LF of approximate tens, the typical beta-decay radius is similar to 10(14)-10(15) cm. As GRBs last long enough [T(90) > 14(I + z) s], one earlier but slower ejected neutron shell will be swept successively by later ejected ion shells in the range similar to 10(13)-10(15) cm, where slow neutrons have decayed significantly. Part of the thermal energy released in the interaction will be given to the electrons. These accelerated electrons will mainly be cooled by the prompt soft gamma-rays and give rise to GeV emission. This kind of GeV emission is particularly important for some very long GRBs and is detectable for the upcoming satellite Gamma-Ray Large Area Space Telescope (GLAST).
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]	AFTERGLOW LIGHT CURVES ; GEV NEUTRINOS ; FIREBALLS ; COLLISIONS ; DYNAMICS ; OUTFLOWS ; MODELS
收录类别	SCI
语种	英语
WOS记录号	WOS:000270677800032
公开日期	2011-12-30
内容类型	期刊论文
源URL	[http://159.226.72.40/handle/332002/1941]
专题	紫金山天文台_宇宙伽马暴、中子星及相关物理研究团组
作者单位	1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Niels Bohr Int Acad, Niels Bohr Inst, DK-2100 Copenhagen, Denmark 4.Nanjing Univ, Joint Ctr Particle Nucl Phys, Nanjing 210008, Peoples R China 5.Nanjing Univ, Cosmol Purple Mt Observ, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Xue, Rong-Rong,Fan, Yi-Zhong,Wei, Da-Ming. GeV emission from neutron-rich internal shocks of some long gamma-ray bursts[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2008,389(1):321-324.
APA	Xue, Rong-Rong,Fan, Yi-Zhong,&Wei, Da-Ming.(2008).GeV emission from neutron-rich internal shocks of some long gamma-ray bursts.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,389(1),321-324.
MLA	Xue, Rong-Rong,et al."GeV emission from neutron-rich internal shocks of some long gamma-ray bursts".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 389.1(2008):321-324.