JET LUMINOSITY OF GAMMA-RAY BURSTS: THE BLANDFORD-ZNAJEK MECHANISM VERSUS THE NEUTRINO ANNIHILATION PROCESS
Liu, Tong1,2,3,4; Hou, Shu-Jin2,5; Xue, Li1,4; Gu, Wei-Min1,4; Liu, T (reprint author), Xiamen Univ, Dept Astron, Xiamen 361005, Fujian, Peoples R China
发表期刊ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
2015-05
卷号218期号:1
DOI10.1088/0067-0049/218/1/12
收录类别SCI
关键词Black Hole Physics Accretion Gamma-ray Burst: General Accretion Disks Neutrinos
摘要A neutrino-dominated accretion flow (NDAF) around a rotating stellar-mass black hole (BH) is one of the plausible candidates for the central engine of gamma-ray bursts (GRBs). Two mechanisms, i.e., the Blandford-Znajek (BZ) mechanism and the neutrino annihilation process, are generally considered to power GRBs. Using the analytic solutions from Xue et al. and ignoring the effects of the magnetic field configuration, we estimate the BZ and neutrino annihilation luminosities as functions of the disk masses and BH spin parameters to contrast the observational jet luminosities of GRBs. Our results show that although the neutrino annihilation processes could account for most GRBs, the BZ mechanism is more effective, especially for long-duration GRBs. Actually, if the energy of the afterglows and flares of GRBs is included, then the distinction between these two mechanisms is more significant. Furthermore, massive disk mass and high BH spin are beneficial for powering the high luminosities of GRBs. Finally, we discuss possible physical mechanisms that could enhance the disk mass or neutrino emission rate of NDAFs and the relevant difference between these two mechanisms.
项目资助者National Basic Research Program of China (973 Program)(2014CB845800) ; National Natural Science Foundation of China(11222328, 11233006, 11333004, 11373002, 11473022, U1331101) ; CAS Open Research Program of Key Laboratory for the Structure and Evolution of Celestial Objects(OP201305, OP201403)
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0067-0049
URL查看原文
WOS记录号WOS:000354999200012
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]COOLED ACCRETION DISKS ; BLACK-HOLE ACCRETION ; DOMINATED ACCRETION ; CENTRAL ENGINE ; GRAVITATIONAL-WAVES ; VERTICAL STRUCTURE ; RELATIVISTIC JETS ; STARS ; FLARES ; PRECESSION
引用统计
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/9371
专题中国科学院天体结构与演化重点实验室
通讯作者Liu, T (reprint author), Xiamen Univ, Dept Astron, Xiamen 361005, Fujian, Peoples R China
作者单位1.Department of Astronomy and Institute of Theoretical Physics and Astrophysics, Xiamen University, Xiamen, Fujian 361005, China
2. Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, Yunnan 650011, China
3.State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China
4.SHAO-XMU Joint Center for Astrophysics, Xiamen University, Xiamen, Fujian 361005, China
5.College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang, Henan 473061, China
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Liu, Tong,Hou, Shu-Jin,Xue, Li,et al. JET LUMINOSITY OF GAMMA-RAY BURSTS: THE BLANDFORD-ZNAJEK MECHANISM VERSUS THE NEUTRINO ANNIHILATION PROCESS[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2015,218(1).
APA Liu, Tong,Hou, Shu-Jin,Xue, Li,Gu, Wei-Min,&Liu, T .(2015).JET LUMINOSITY OF GAMMA-RAY BURSTS: THE BLANDFORD-ZNAJEK MECHANISM VERSUS THE NEUTRINO ANNIHILATION PROCESS.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,218(1).
MLA Liu, Tong,et al."JET LUMINOSITY OF GAMMA-RAY BURSTS: THE BLANDFORD-ZNAJEK MECHANISM VERSUS THE NEUTRINO ANNIHILATION PROCESS".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 218.1(2015).
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