Jet precession driven by neutrino-cooled disk for gamma-ray bursts

doi:10.1051/0004-6361/200913447

YNAO OpenIR > 南方基地

	Jet precession driven by neutrino-cooled disk for gamma-ray bursts
	Liu, T 1; Liang, EW 2; Gu, WM 3; Zhao XH(赵晓红)4,5 ; Dai, ZG 1; Lu, JF 3; Liu, T (reprint author), Nanjing Univ, Dept Astron, Nanjing 210093, Jiangsu, Peoples R China.
发表期刊	ASTRONOMY & ASTROPHYSICS
	2010-06
卷号	516
DOI	10.1051/0004-6361/200913447
产权排序	第4完成单位
收录类别	SCI ; EI
关键词	Accretion: Accretion Disks Black Hole Physics Gamma Ray Burst: General
摘要	Aims. A model of jet precession driven by a neutrino-cooled disk around a spinning black hole is presented to explain the temporal structure and spectral evolution of gamma-ray bursts (GRBs). Methods. The differential rotation of the outer part of a neutrino-dominated accretion disk may result in precession of the inner part of the disk and the central black hole, hence driving a precessed jet via neutrino annihilation around the inner part of the disk. Results. Both analytic and numeric results for our model are presented. Our calculations show that a black-hole, accretion-disk system with the black hole mass M similar or equal to 3.66 M(circle dot), accretion rate. M similar or equal to 0.54 M(circle dot) s(-1), spin parameter a = 0.9, and viscosity parameter alpha = 0.01 may drive a precessed jet with period P = 1 s and luminosity L = 10(51) erg s(-1), corresponding to the scenario for long GRBs. A precessed jet with P = 0.1 s and L = 10(50) erg s(-1) may be powered by a system with M similar or equal to 5.59 M(circle dot), M similar or equal to 0.74 M similar or equal to s(-1), a = 0.1, and alpha = 0.01, and is possibly responsible for the short GRBs. Both the temporal and spectral evolution in GRB pulse may be explained with our model. Conclusions. GRB central engines most likely power a precessed jet driven by a neutrino-cooled disk. The global GRB lightcurves thus could be modulated by the jet precession during the accretion timescale of the GRB central engine. Both the temporal and spectral evolution in GRB pulse may stem from a viewing effect of the jet precession.
项目资助者	China Postdoctoral Science Foundation [20080441038] ; National Natural Science Foundation of China [10778711, 10833002, 10873002, 10873009] ; National Basic Research Program (973 Program) of China [2009CB824800] ; Guangxi SHI-BAI-QIAN [2007201] ; Guangxi Science Foundation [2010GXNSFC013011] ; program for 100 Young and Middle-aged Disciplinary Leaders in Guangxi Higher Education Institutions ; research foundation of Guangxi University [M30520]
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	0004-6361
URL	查看原文
WOS记录号	WOS:000280275400031
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	BLACK-HOLE SPIN ; ACCRETION DISKS ; DOMINATED ACCRETION ; LIGHT CURVES ; MODELS ; EVOLUTION ; LUMINOSITY ; EMISSION ; STARS ; LONG
引用统计	被引频次：52[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ynao.ac.cn/handle/114a53/5392
专题	南方基地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), Nanjing Univ, Dept Astron, Nanjing 210093, Jiangsu, Peoples R China.
作者单位	1.Department of Astronomy, Nanjing University, Nanjing, Jiangsu 210093, PR China 2.Department of Physics, Guangxi University, Nanning, Guangxi, 530004, PR China 3.Department of Physics and Institute of Theoretical Physics and Astrophysics, Xiamen University, Xiamen, Fujian 361005, PR China 4.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming, Yunnan, 650011, PR China 5.Key Laboratory for the Structure and Evolution of Celestial Bodies, Chinese Academy of Sciences, Kunming, Yunnan, 650011, PR China
推荐引用方式 GB/T 7714	Liu, T,Liang, EW,Gu, WM,et al. Jet precession driven by neutrino-cooled disk for gamma-ray bursts[J]. ASTRONOMY & ASTROPHYSICS,2010,516.
APA	Liu, T.,Liang, EW.,Gu, WM.,Zhao XH.,Dai, ZG.,...&Liu, T .(2010).Jet precession driven by neutrino-cooled disk for gamma-ray bursts.ASTRONOMY & ASTROPHYSICS,516.
MLA	Liu, T,et al."Jet precession driven by neutrino-cooled disk for gamma-ray bursts".ASTRONOMY & ASTROPHYSICS 516(2010).

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Jet precession drive（284KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	浏览请求全文