RELATIVISTIC GLOBAL SOLUTIONS OF NEUTRINO-DOMINATED ACCRETION FLOWS

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	RELATIVISTIC GLOBAL SOLUTIONS OF NEUTRINO-DOMINATED ACCRETION FLOWS
	Xue, L ; Liu, T ; Gu, WM ; Lu, JF
刊名	ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
	2013
卷号	207 期号:2
关键词	GAMMA-RAY BURSTS KERR BLACK-HOLES ENERGY DEPOSITION RATE VERTICAL STRUCTURE PAIR ANNIHILATION STELLAR INTERIORS JET PRECESSION CENTRAL ENGINE QUARK STARS DISKS
ISSN号	0067-0049
通讯作者	Liu, T (reprint author), Xiamen Univ, Dept Astron, Xiamen 361005, Fujian, Peoples R China.
英文摘要	Neutrino-dominated accretion flows (NDAFs) around rotating stellar-mass black holes are plausible candidates for the central engines of gamma-ray bursts (GRBs). We investigate one-dimensional global solutions of NDAFs, taking into account general relativity in the Kerr metric, neutrino physics, and nucleosynthesis more precisely than previous works. We calculate 16 solutions with different characterized accretion rates and black hole spins to exhibit the radial distributions of various physical properties in NDAFs. We confirm that the electron degeneracy has important effects in NDAFs and we find that the electron fraction is about 0.46 in the outer region for all 16 solutions. From the perspective of the mass fraction, free nucleons, He-4, and Fe-56 dominate in the inner, middle, and outer regions, respectively. The influence of neutrino trapping on the annihilation is of importance for the superhigh accretion ((M) over dot = 10 M-circle dot s(-1)) and most of the 16 solutions have an adequate annihilation luminosity for GRBs.
学科主题	Physics
收录类别	SCI
资助信息	National Basic Research Program (973 Program) of China [2009CB824800]; National Natural Science Foundation of China [11003016, 11073015, 11103015, 11222328, 11233006]; Natural Science Foundation of Fujian Province of China [2010J01017]
原文出处	http://dx.doi.org/10.1088/0067-0049/207/2/23
语种	英语
WOS记录号	WOS:000322710000005
公开日期	2014-04-25
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/15306]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	Xue, L,Liu, T,Gu, WM,et al. RELATIVISTIC GLOBAL SOLUTIONS OF NEUTRINO-DOMINATED ACCRETION FLOWS[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2013,207(2).
APA	Xue, L,Liu, T,Gu, WM,&Lu, JF.(2013).RELATIVISTIC GLOBAL SOLUTIONS OF NEUTRINO-DOMINATED ACCRETION FLOWS.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,207(2).
MLA	Xue, L,et al."RELATIVISTIC GLOBAL SOLUTIONS OF NEUTRINO-DOMINATED ACCRETION FLOWS".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 207.2(2013).