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Afterglow Light Curves from Off-Axis GRB Jets in Stratified Circumburst Medium
Zhao XH(赵晓红)1,2,3; Cheng, Kang-Fa4
发表期刊UNIVERSE
2022-11
卷号8期号:11
DOI10.3390/universe8110588
产权排序第1完成单位
收录类别SCI
关键词gamma-ray burst gravitational waves ISM jets outflows
摘要

We study the gamma-ray burst (GRB) afterglow light curves produced by an off-axis jet in a stratified circumburst medium and summarize the temporal indices of the coasting phase, the deceleration phase, the Newtonian phase, and the deep Newtonian phase for various viewing angles and power-law indices of medium density. Generally, the afterglow light curves of off-axis GRBs in the homogeneous interstellar medium have a steep rise arising due to jet deceleration. In the stratified medium, the flux rises is more shallow but peaks earlier for the same viewing angle due to faster deceleration of the jet running into the denser stratified medium, compared with the case of the interstellar medium (ISM). Observations of off-axis bursts will possibly increase over the coming years due to the arrival of the multi-messenger era and the forthcoming surveys in multiple bands. The temporal indices of off-axis afterglows derived in the paper will provide a reference for comparison with the observations and can diagnose the circumburst environment. The numerical code calculating the afterglow light curve also can be used to fit the multi-wavelength light curves.

资助项目National Science Foundation of China[U1831135] ; Guangxi Natural Science Foundation[GKAD22035205] ; Scientific Research Project of Guangxi Minzu University[2021KJQD03]
项目资助者National Science Foundation of China[U1831135] ; Guangxi Natural Science Foundation[GKAD22035205] ; Scientific Research Project of Guangxi Minzu University[2021KJQD03]
语种英语
学科领域天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学
学科门类理学 ; 理学::天文学
文章类型Article
出版者MDPI
出版地ST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND
URL查看原文
WOS记录号WOS:000883989300001
WOS研究方向Astronomy & Astrophysics ; Physics
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
关键词[WOS]GAMMA-RAY BURST ; ORPHAN AFTERGLOWS ; RADIO ; DYNAMICS ; SPECTRA ; DETECTABILITY ; PREDICTIONS ; EMISSION ; FLASHES ; IMAGES
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
版本出版稿
条目标识符http://ir.ynao.ac.cn/handle/114a53/25649
专题星系类星体研究组
中国科学院天体结构与演化重点实验室
通讯作者Zhao XH(赵晓红)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China;
2.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100012, China;
3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China;
4.School of Mathematics and Physics, Guangxi Minzu University, Nanning 530006, China
第一作者单位中国科学院云南天文台
通讯作者单位中国科学院云南天文台
推荐引用方式
GB/T 7714
Zhao XH,Cheng, Kang-Fa. Afterglow Light Curves from Off-Axis GRB Jets in Stratified Circumburst Medium[J]. UNIVERSE,2022,8(11).
APA Zhao XH,&Cheng, Kang-Fa.(2022).Afterglow Light Curves from Off-Axis GRB Jets in Stratified Circumburst Medium.UNIVERSE,8(11).
MLA Zhao XH,et al."Afterglow Light Curves from Off-Axis GRB Jets in Stratified Circumburst Medium".UNIVERSE 8.11(2022).
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