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Revealing Physical Activity of GRB Central Engine with Macronova/Kilonova Data
Shen, Zhao-Qiang1,2; Jin, Zhi-Ping1,3; Liang, Yun-Feng1,2; Li, Xiang1,2; Fan, Yi-Zhong1,3; Wei, Da-Ming1,3
2017-02-01
Source PublicationASTROPHYSICAL JOURNAL LETTERS
ISSN2041-8205
Volume835Issue:2Pages:5
Corresponding AuthorFan, Yi-Zhong(yzfan@pmo.ac.cn)
AbstractThe modeling of Li-Paczynski macronova/kilonova signals gives a reasonable estimate on the neutron-rich material ejected during the neutron star mergers. Usually the accretion disk is more massive than the macronova ejecta, with which the efficiencies of converting the disk mass into prompt emission of three merger-driven GRBs can hence be directly constrained. Supposing the macronovae/kilonovae associated with GRB 050709, GRB 060614, and GRB 130603B arose from radioactive decay of the r-process material, the upper limit on energy conversion efficiencies are found to be as low as similar to 10(-6) -10(-4). Moreover, for all three events, neutrino annihilation is likely powerful enough to account for the brief gamma-ray flashes. Neutrino annihilation can also explain the "extended" emission lasting similar to 100 s in GRB 050709, but does not work for the one in GRB 060614. These progresses demonstrate that the macronova can serve as a novel probe of the central engine activity.
Keywordbinaries: general gamma-ray burst: general radiation mechanisms: non-thermal stars: neutron
DOI10.3847/2041-8213/835/2/L22
WOS KeywordGAMMA-RAY BURSTS ; NEUTRON-STAR MERGERS ; BLACK-HOLES ; PROGENITORS ; EMISSION ; NUCLEOSYNTHESIS ; PROSPECTS ; FIREBALLS ; 130603B ; MODELS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000395506600001
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/23199
Collection中国科学院紫金山天文台
Corresponding AuthorFan, Yi-Zhong
Affiliation1.Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Purple Mt Observ, 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
Recommended Citation
GB/T 7714
Shen, Zhao-Qiang,Jin, Zhi-Ping,Liang, Yun-Feng,et al. Revealing Physical Activity of GRB Central Engine with Macronova/Kilonova Data[J]. ASTROPHYSICAL JOURNAL LETTERS,2017,835(2):5.
APA Shen, Zhao-Qiang,Jin, Zhi-Ping,Liang, Yun-Feng,Li, Xiang,Fan, Yi-Zhong,&Wei, Da-Ming.(2017).Revealing Physical Activity of GRB Central Engine with Macronova/Kilonova Data.ASTROPHYSICAL JOURNAL LETTERS,835(2),5.
MLA Shen, Zhao-Qiang,et al."Revealing Physical Activity of GRB Central Engine with Macronova/Kilonova Data".ASTROPHYSICAL JOURNAL LETTERS 835.2(2017):5.
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