GW170817: The Energy Extraction Process of the Off-axis Relativistic Outflow and the Constraint on the Equation of State of Neutron Stars

doi:10.3847/1538-4357/ab1914

	GW170817: The Energy Extraction Process of the Off-axis Relativistic Outflow and the Constraint on the Equation of State of Neutron Stars
	Wang, Yuan-Zhu 1,2; Shao, Dong-Sheng 1,3; Jiang, Jin-Liang 1,3; Tang, Shao-Peng 1,3; Ren, Xiao-Xiao 1,3; Zhang, Fu-Wen 4; Jin, Zhi-Ping1,3 ; Fan, Yi-Zhong1,3 ; Wei, Da-Ming1,3
刊名	ASTROPHYSICAL JOURNAL
	2019-05-20
卷号	877 期号:1 页码:7
关键词	binaries: close gamma-ray burst: individual (GRB 170817A) gravitational waves
ISSN号	0004-637X
DOI	10.3847/1538-4357/ab1914
通讯作者	Wang, Yuan-Zhu(wangyz@pmo.ac.cn)
英文摘要	As revealed recently by the modeling of the multi wavelength data of the emission following GW170817/GRB 170817A, there was an off-axis energetic relativistic outflow component launched by this historic double neutron star merger event. In this work we use the results of this model to examine the energy extraction process of the central engine. We show that the magnetic process (i.e., the Blandford-Znajek mechanism) is favored, while the neutrino process usually requires an accretion disk that is too massive if the duration of the central engine activity T(act )is comparable to the observed T-90 of GRB 170817A. If T-act is less than similar to 0.2 s, the two models are indistinguishable. We propose that the GRB observations are helpful to constrain the combined tidal parameter (A) over tilde, and by adopting the accretion disk mass distribution estimated in the BZ mechanism, the 90% credible interval of (A) over tilde for the progenitor of GW170817 is inferred as 309 - 954.
WOS关键词	RAY ; NUCLEOSYNTHESIS ; BURSTS ; MODEL
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000468279600002
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/26682]
专题	中国科学院紫金山天文台
通讯作者	Wang, Yuan-Zhu
作者单位	1.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China 2.Univ Chinese Acad Sci, Yuquan Rd 19, Beijing 100049, Peoples R China 3.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Anhui, Peoples R China 4.Guilin Univ Technol, Coll Sci, Guilin 541004, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yuan-Zhu,Shao, Dong-Sheng,Jiang, Jin-Liang,et al. GW170817: The Energy Extraction Process of the Off-axis Relativistic Outflow and the Constraint on the Equation of State of Neutron Stars[J]. ASTROPHYSICAL JOURNAL,2019,877(1):7.
APA	Wang, Yuan-Zhu.,Shao, Dong-Sheng.,Jiang, Jin-Liang.,Tang, Shao-Peng.,Ren, Xiao-Xiao.,...&Wei, Da-Ming.(2019).GW170817: The Energy Extraction Process of the Off-axis Relativistic Outflow and the Constraint on the Equation of State of Neutron Stars.ASTROPHYSICAL JOURNAL,877(1),7.
MLA	Wang, Yuan-Zhu,et al."GW170817: The Energy Extraction Process of the Off-axis Relativistic Outflow and the Constraint on the Equation of State of Neutron Stars".ASTROPHYSICAL JOURNAL 877.1(2019):7.