YNAO OpenIR  > 中国科学院天体结构与演化重点实验室
The X-Ray Light Curve in GRB 170714A: Evidence for a Quark Star?
Hou, Shu-Jin1,2,3; Liu, Tong4; Xu, Ren-Xin5; Mu, Hui-Jun4; Song, Cui-Ying4; Lin, Da-Bin3; Gu, Wei-Min4
Source PublicationASTROPHYSICAL JOURNAL
2018-02-20
Volume854Issue:2
DOI10.3847/1538-4357/aaabba
Indexed BySCI
KeywordDense Matter Gamma-ray Burst: Individual (Grb 170714a) Magnetic Fields Star: Neutron
Abstract

Two plateaus and a following bump in the X-ray light curve of GRB 170714A have been detected by the Swift/X-ray Telescope, which could be very significant for the central engine of gamma-ray bursts (GRBs), implying that the origin of this burst might be different from those of other ultra-long GRBs. We propose that merging two neutron stars into a hyper-massive quark star (QS) and then collapsing into a black hole (BH), with a delay time around 10(4) s, could be responsible for these X-ray components. The hyper-massive QS is initially in a fluid state, being turbulent and differentially rotating, but would solidify and release its latent heat, injecting it into the GRB fireball (lasting about 103 s during the liquid-solid phase transition). A magnetic field as high as similar to 10(15) G can be created by dynamo action of the newborn liquid QS, and a magnetar-like central engine (after solidification) supplies significant energy for the second plateau. More energy could be released during a fall-back accretion after the post-merger QS collapses to a BH, and the X-ray bump forms. This post-merger QS model could be tested by future observations, with either advanced gravitational wave detectors (e.g., advanced LIGO and VIRGO) or X-ray/optical telescopes.

Funding ProjectNational Basic Research Program of China (973 Program)[2014CB845800] ; National Natural Science Foundation of China[11503011] ; National Natural Science Foundation of China[11473022] ; National Natural Science Foundation of China[11573023] ; National Natural Science Foundation of China[11673002] ; National Natural Science Foundation of China[11773007] ; National Natural Science Foundation of China[U1531243] ; Fundamental Research Funds for the Central Universities[20720160024] ; CAS Open Research Program of Key Laboratory for the Structure and Evolution of Celestial Objects[OP201403] ; Key Scientific Research Project in Universities of Henan Province[15A160001] ; Doctoral Foundation of Nanyang Normal University
Funding OrganizationNational Basic Research Program of China (973 Program)[2014CB845800] ; National Natural Science Foundation of China[11503011, 11473022, 11573023, 11673002, 11773007, U1531243] ; Fundamental Research Funds for the Central Universities[20720160024] ; CAS Open Research Program of Key Laboratory for the Structure and Evolution of Celestial Objects[OP201403] ; Key Scientific Research Project in Universities of Henan Province[15A160001] ; Doctoral Foundation of Nanyang Normal University
Language英语
Subject Area天文学 ; 天体物理学 ; 高能天体物理学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS IDWOS:000425389700002
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordBLANDFORD-ZNAJEK PROCESS ; MILLISECOND MAGNETAR ; ENERGY INJECTION ; CENTRAL ENGINE ; NEUTRON-STAR ; BURST AFTERGLOW ; LONG ; EMISSION ; GRB-060614 ; SIGNATURE
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/12293
Collection中国科学院天体结构与演化重点实验室
Corresponding AuthorLiu, Tong
Affiliation1.College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang, Henan 473061, People's Republic of China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, Yunnan 650011, People's Republic of China
3.Laboratory for Relativistic Astrophysics, Department of Physics, Guangxi University, Nanning, Guangxi 530004, People's Republic of China
4.Department of Astronomy, Xiamen University, Xiamen, Fujian 361005, People's Republic of China
5.School of Physics, Peking University, Beijing 100871, People's Republic of China
Recommended Citation
GB/T 7714
Hou, Shu-Jin,Liu, Tong,Xu, Ren-Xin,et al. The X-Ray Light Curve in GRB 170714A: Evidence for a Quark Star?[J]. ASTROPHYSICAL JOURNAL,2018,854(2).
APA Hou, Shu-Jin.,Liu, Tong.,Xu, Ren-Xin.,Mu, Hui-Jun.,Song, Cui-Ying.,...&Gu, Wei-Min.(2018).The X-Ray Light Curve in GRB 170714A: Evidence for a Quark Star?.ASTROPHYSICAL JOURNAL,854(2).
MLA Hou, Shu-Jin,et al."The X-Ray Light Curve in GRB 170714A: Evidence for a Quark Star?".ASTROPHYSICAL JOURNAL 854.2(2018).
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