?Double-tracking? Characteristics of the Spectral Evolution of GRB 131231A: Synchrotron Origin?
文献类型：期刊论文
| 作者 | Li, Liang10,11; Geng, Jin-Jun8,9; Meng, Yan-Zhi7,11; Wu, Xue-Feng11; Huang, Yong-Feng8,9; Wang, Yu4,5,6,10; Moradi, Rahim5,6,10; Uhm, Z. Lucas2,3; Zhang, Bing1 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2019-10-20 |
| 卷号 | 884期号:2页码:9 |
| ISSN号 | 0004-637X |
| 关键词 | gamma-ray burst: general radiation mechanisms: non-thermal |
| DOI | 10.3847/1538-4357/ab40b9 |
| 通讯作者 | Li, Liang(liang.li@icranet.org) |
| 英文摘要 | The characteristics of the spectral evolution of the prompt emission of gamma-ray bursts (GRBs), which are closely related to the radiation mechanism (synchrotron or photosphere), are still an unsolved subject. Here, by performing the detailed time-resolved spectral fitting of GRB 131231A, which has a very bright and well-defined single pulse, some interesting spectral evolution features have been found. (i) Both the low-energy spectral index ? and the peak energy E-p exhibit the ?flux-tracking? pattern (?double-tracking? characteristics). (ii) The parameter relations, i.e., F (the energy flux)-?, F?E-p, and E-p??, along with the analogous Yonetoku E-p?L-?,L-iso relation for the different time-resolved spectra, show strong monotonous (positive) correlations, both in the rising and the decaying phases. (iii) The values of ? do not exceed the synchrotron limit (?=?2/3) in all slices across the pulse, favoring the synchrotron origin. We argue that the one-zone synchrotron emission model with the emitter streaming away at a large distance from the central engine can explain all of these special spectral evolution characteristics. |
| WOS关键词 | GAMMA-RAY-BURSTS ; INTENSITY CORRELATION ; BATSE OBSERVATIONS ; LIGHT CURVES ; SHOCK MODEL ; EMISSION ; PHOTOSPHERE ; RADIATION ; CATALOG ; BRIGHT |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | IOP PUBLISHING LTD |
| WOS记录号 | WOS:000498190300001 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/35228]  |
| 专题 | 中国科学院紫金山天文台 |
| 通讯作者 | Li, Liang |
| 作者单位 | 1.Univ Nevada, Dept Phys & Astron, Las Vegas, NV 89154 USA 2.Korea Astron & Space Sci Inst, Daejeon 34055, South Korea 3.NASA, Goddard Space Flight Ctr, Astrophys Sci Div, Greenbelt, MD 20771 USA 4.INAF Osservatorio Astron Abruzzo, Via M Maggini Snc, I-64100 Teramo, Italy 5.Sapienza Univ Roma, ICRA, Piazzale Aldo Moro 5, I-00185 Rome, Italy 6.Sapienza Univ Roma, Dept Fis, Piazzale Aldo Moro 5, I-00185 Rome, Italy 7.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 8.Nanjing Univ, Minist Educ, Key Lab Modern Astron & Astrophys, Nanjing 210023, Jiangsu, Peoples R China 9.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210023, Jiangsu, Peoples R China 10.ICRANet, Piazza Repubbl 10, I-65122 Pescara, Italy |
| 推荐引用方式 GB/T 7714 | Li, Liang,Geng, Jin-Jun,Meng, Yan-Zhi,et al. ?Double-tracking? Characteristics of the Spectral Evolution of GRB 131231A: Synchrotron Origin?[J]. ASTROPHYSICAL JOURNAL,2019,884(2):9. |
| APA | Li, Liang.,Geng, Jin-Jun.,Meng, Yan-Zhi.,Wu, Xue-Feng.,Huang, Yong-Feng.,...&Zhang, Bing.(2019).?Double-tracking? Characteristics of the Spectral Evolution of GRB 131231A: Synchrotron Origin?.ASTROPHYSICAL JOURNAL,884(2),9. |
| MLA | Li, Liang,et al."?Double-tracking? Characteristics of the Spectral Evolution of GRB 131231A: Synchrotron Origin?".ASTROPHYSICAL JOURNAL 884.2(2019):9. |
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来源：紫金山天文台
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