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Xue, L; Liu, T; Gu, WM; Lu, JF; Liu, T (reprint author), Xiamen Univ, Dept Astron, Xiamen 361005, Fujian, Peoples R China.
RELATIVISTIC GLOBAL SOLUTIONS OF NEUTRINO-DOMINATED ACCRETION FLOWS
Source PublicationASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
Language英语
KeywordGamma-ray Bursts Kerr Black-holes Energy Deposition Rate Vertical Structure Pair Annihilation Stellar Interiors Jet Precession Central Engine Quark Stars Disks
AbstractNeutrino-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.
2013
ISSN0067-0049
Volume207Issue:2
Subject AreaPhysics
Indexed BySCI
Funding OrganizationNational 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] ; 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] ; 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] ; 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]
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/15306
Collection理论物理所科研产出_SCI论文
Corresponding AuthorLiu, T (reprint author), Xiamen Univ, Dept Astron, Xiamen 361005, Fujian, Peoples R China.
Recommended Citation
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,&Liu, T .(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).
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