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题名: RELATIVISTIC GLOBAL SOLUTIONS OF NEUTRINO-DOMINATED ACCRETION FLOWS
作者: Xue, L ;  Liu, T ;  Gu, WM ;  Lu, JF
刊名: ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
出版日期: 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
学科分类: Physics
通讯作者: Liu, T (reprint author), Xiamen Univ, Dept Astron, Xiamen 361005, Fujian, Peoples R China.
部门归属: [Xue, Li; Liu, Tong; Gu, Wei-Min; Lu, Ju-Fu] Xiamen Univ, Dept Astron, Xiamen 361005, Fujian, Peoples R China; [Xue, Li; Liu, Tong; Gu, Wei-Min; Lu, Ju-Fu] Xiamen Univ, Inst Theoret Phys & Astrophys, Xiamen 361005, Fujian, Peoples R China; [Xue, Li] Nicolaus Copernicus Astron Ctr, PL-00716 Warsaw, Poland; [Liu, Tong] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, 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.
资助者: 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]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000322710000005
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15306
Appears in Collections:理论物理所2013年知识产出 _期刊论文

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Recommended Citation:
Xue, L,Liu, T,Gu, WM,et al. RELATIVISTIC GLOBAL SOLUTIONS OF NEUTRINO-DOMINATED ACCRETION FLOWS[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2013,207(2).
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