JET LUMINOSITY OF GAMMA-RAY BURSTS: THE BLANDFORD-ZNAJEK MECHANISM VERSUS THE NEUTRINO ANNIHILATION PROCESS
文献类型：期刊论文
| 作者 | Liu, T; Hou, SJ; Xue, L; Gu, WM |
| 刊名 | ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
 |
| 出版日期 | 2015 |
| 卷号 | 218期号:1页码:12 |
| 关键词 | accretion, accretion disks black hole physics gamma-ray burst: general neutrinos |
| 通讯作者 | Liu, T (reprint author), Xiamen Univ, Dept Astron, Xiamen 361005, Fujian, Peoples R China. |
| 英文摘要 | 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. |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | 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 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/21013]  |
| 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 | Liu, T,Hou, SJ,Xue, L,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):12. |
| APA | Liu, T,Hou, SJ,Xue, L,&Gu, WM.(2015).JET LUMINOSITY OF GAMMA-RAY BURSTS: THE BLANDFORD-ZNAJEK MECHANISM VERSUS THE NEUTRINO ANNIHILATION PROCESS.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,218(1),12. |
| MLA | Liu, T,et al."JET LUMINOSITY OF GAMMA-RAY BURSTS: THE BLANDFORD-ZNAJEK MECHANISM VERSUS THE NEUTRINO ANNIHILATION PROCESS".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 218.1(2015):12. |
入库方式： OAI收割
来源：理论物理研究所
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