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GW170817: The Energy Extraction Process of the Off-axis Relativistic Outflow and the Constraint on the Equation of State of Neutron Stars
Wang, Yuan-Zhu1,2; Shao, Dong-Sheng1,3; Jiang, Jin-Liang1,3; Tang, Shao-Peng1,3; Ren, Xiao-Xiao1,3; Zhang, Fu-Wen4; Jin, Zhi-Ping1,3; Fan, Yi-Zhong1,3; Wei, Da-Ming1,3
2019-05-20
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume877Issue:1Pages:7
Corresponding AuthorWang, Yuan-Zhu(wangyz@pmo.ac.cn)
AbstractAs 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.
Keywordbinaries: close gamma-ray burst: individual (GRB 170817A) gravitational waves
DOI10.3847/1538-4357/ab1914
WOS KeywordRAY ; NUCLEOSYNTHESIS ; BURSTS ; MODEL
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000468279600002
PublisherIOP PUBLISHING LTD
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/26683
Collection中国科学院紫金山天文台
Corresponding AuthorWang, Yuan-Zhu
Affiliation1.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
Recommended Citation
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.
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