Is Bremsstrahlung a Possible Mechanism to Explain the Thermal Feature in the GRB 130925A X-Ray Afterglow?
文献类型:期刊论文
作者 | Liu JY(刘杰英)1,2,3; Mao JR(毛基荣)1,2,3 |
刊名 | The Astrophysical Journal |
出版日期 | 2019-06-20 |
卷号 | 878期号:2 |
ISSN号 | 0004-637X |
关键词 | gamma-ray burst: general gamma-ray burst: individual (GRB 130925A) radiation mechanisms: thermal |
DOI | 10.3847/1538-4357/ab21bb |
产权排序 | 第1完成单位 |
文献子类 | Article |
英文摘要 | It has been reported that some X-ray spectra of gamma-ray burst (GRB) afterglows cannot be fitted by a simple power law. A blackbody component is added to precisely fit the thermal feature in these spectra. Alternatively, we propose that bremsstrahlung radiation can also be one possible mechanism to explain the thermal component of the GRB X-ray afterglow. In particular, we examine the X-ray afterglow of the ultra-long GRB 130925A in this paper. By our calculation, we find that the X-ray thermal component observed by both Swift-XRT and NuSTAR can be well explained by the bremsstrahlung radiation. Our results indicate that the GRBs with the bremsstrahlung emission in the X-ray afterglow could be born in a metal-rich and dusty environment. |
学科主题 | 天文学 ; 天体物理学 ; 高能天体物理学 |
URL标识 | 查看原文 |
资助项目 | National Natural Science Foundation of China[11303086] ; National Natural Science Foundation of China[11673062] ; Hundred Talent Program of Chinese Academy of Sciences, the Major Program of Chinese Academy of Sciences[KJZD-EW-M06] ; Oversea Talent Program of Yunnan Province |
语种 | 英语 |
出版者 | The American Astronomical Society |
WOS记录号 | IOP:0004-637X-878-2-AB21BB |
资助机构 | National Natural Science Foundation of China[11303086, 11673062] ; Hundred Talent Program of Chinese Academy of Sciences, the Major Program of Chinese Academy of Sciences[KJZD-EW-M06] ; Oversea Talent Program of Yunnan Province |
源URL | [http://ir.ynao.ac.cn/handle/114a53/20326] |
专题 | 云南天文台_恒星物理研究组 云南天文台_中国科学院天体结构与演化重点实验室 |
通讯作者 | Mao JR(毛基荣) |
作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, Yunnan Province, People's Republic of China; 2.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, People's Republic of China 3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, People's Republic of China |
推荐引用方式 GB/T 7714 | Liu JY,Mao JR. Is Bremsstrahlung a Possible Mechanism to Explain the Thermal Feature in the GRB 130925A X-Ray Afterglow?[J]. The Astrophysical Journal,2019,878(2). |
APA | Liu JY,&Mao JR.(2019).Is Bremsstrahlung a Possible Mechanism to Explain the Thermal Feature in the GRB 130925A X-Ray Afterglow?.The Astrophysical Journal,878(2). |
MLA | Liu JY,et al."Is Bremsstrahlung a Possible Mechanism to Explain the Thermal Feature in the GRB 130925A X-Ray Afterglow?".The Astrophysical Journal 878.2(2019). |
入库方式: OAI收割
来源:云南天文台
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