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Afterglows and Kilonovae Associated with Nearby Low-luminosity Short-duration Gamma-Ray Bursts: Application to GW170817/GRB 170817A
Xiao,Di1,2; Liu,Liang-Duan1,2; Dai,Zi-Gao1,2; Wu,Xue-Feng3,4
2017-12-01
Source PublicationThe Astrophysical Journal Letters
ISSN2041-8205
Volume850Issue:2
AbstractAbstract Very recently, the gravitational-wave (GW) event GW170817 was discovered to be associated with the short gamma-ray burst (GRB) 170817A. Multi-wavelength follow-up observations were carried out, and X-ray, optical, and radio counterparts to GW170817 were detected. The observations undoubtedly indicate that GRB 170817A originates from a binary neutron star merger. However, the GRB falls into the low-luminosity class that could have a higher statistical occurrence rate and detection probability than the normal (high-luminosity) class. This implies the possibility that GRB 170817A is intrinsically powerful, but we are off-axis and only observe its side emission. In this Letter, we provide a timely modeling of the multi-wavelength afterglow emission from this GRB and the associated kilonova signal from the merger ejecta, under the assumption of a structured jet, a two-component jet, and an intrinsically less-energetic quasi-isotropic fireball, respectively. Comparing the afterglow properties with the multi-wavelength follow-up observations, we can distinguish between these three models. Furthermore, a few model parameters (e.g., the ejecta mass and velocity) can be constrained.
Keywordgamma-ray burst: general gravitational waves radiation mechanisms: non-thermal
DOI10.3847/2041-8213/aa9b2b
Language英语
WOS IDIOP:2041-8205-850-2-aa9b2b
PublisherThe American Astronomical Society
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Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/22101
Collection中国科学院紫金山天文台
Affiliation1.School of Astronomy and Space Science, Nanjing University, Nanjing 210093, China; dxiao@nju.edu.cn, dzg@nju.edu.cn
2.Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing, China
3.Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China
4.Joint Center for Particle, Nuclear Physics and Cosmology, Nanjing University-Purple Mountain Observatory, Nanjing 210008, China
Recommended Citation
GB/T 7714
Xiao,Di,Liu,Liang-Duan,Dai,Zi-Gao,et al. Afterglows and Kilonovae Associated with Nearby Low-luminosity Short-duration Gamma-Ray Bursts: Application to GW170817/GRB 170817A[J]. The Astrophysical Journal Letters,2017,850(2).
APA Xiao,Di,Liu,Liang-Duan,Dai,Zi-Gao,&Wu,Xue-Feng.(2017).Afterglows and Kilonovae Associated with Nearby Low-luminosity Short-duration Gamma-Ray Bursts: Application to GW170817/GRB 170817A.The Astrophysical Journal Letters,850(2).
MLA Xiao,Di,et al."Afterglows and Kilonovae Associated with Nearby Low-luminosity Short-duration Gamma-Ray Bursts: Application to GW170817/GRB 170817A".The Astrophysical Journal Letters 850.2(2017).
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