Time Evolution of Optical Darkness in Gamma-Ray Burst Afterglow: The Case of GRB 240825A
文献类型：期刊论文
| 作者 | Li RZ(李睿智)1,2,5; Mao JR(毛基荣)1,4,5; Yang, Yuan-Pei3; Wang BT(王柏廷)1,2,5; Song FF(宋非凡)1,2,5; Xin YX(辛玉新)1,4,5; Bai JM(白金明)1,4,5 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2026-01-20 |
| 卷号 | 997期号:1 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ae1e7d |
| 产权排序 | 第1完成单位 |
| 文献子类 | Article |
| 英文摘要 | Long-duration gamma-ray bursts (GRBs) are believed to occur in star-forming regions. The multiwavelength follow-up observations of the early afterglow of GRB 240825A provided insights into the evolution of the optical-to-X-ray spectral feature of the afterglow. We comprehensively investigate the evolution of X-ray spectral properties through time-resolved spectral analysis and calculate optical darkness (beta OX) to reveal the physical properties of the afterglow. The X-ray-to-optical spectral energy distributions of afterglow in different time intervals are fitted to derive the extinction curves. The beta OX exhibits a trend of decreasing and then increasing, reaching its minimum value at similar to 1000 s post-trigger. However, at 11 hr post-trigger, beta OX does not meet the criteria for an optically dark burst. The extinction curves in different time intervals indicate that GRB 240825A occurred in a dust-obscured environment. |
| 学科主题 | 天文学 ; 星系与宇宙学 |
| URL标识 | 查看原文 |
| 出版地 | No.2 The Distillery, Glassfields, Avon Street, Bristol, ENGLAND |
| WOS关键词 | EXTINCTION CURVES ; STAR-FORMATION ; MOLECULAR CLOUD ; COMPLETE SAMPLE ; SWIFT-ERA ; ANALYTIC FITS ; LIGHT CURVES ; HOST GALAXY ; DUST ; ABSORPTION |
| 资助项目 | MOST divided by National Key Research and Development Program of China (NKPs)[2023YFE0101200] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001662365800001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | MOST divided by National Key Research and Development Program of China (NKPs)[2023YFE0101200] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/28848]  |
| 专题 | 云南天文台_丽江天文观测站（南方基地） |
| 通讯作者 | Mao JR(毛基荣) |
| 作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People’s Republic of China; jirongmao@mail.ynao.ac.cn; 2.University of Chinese Academy of Sciences, Beijing 101408, People’s Republic of China; 3.South-Western Institute for Astronomy Research, Yunnan University, Kunming 650504, People’s Republic of China 4.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, People’s Republic of China; 5.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100012, People’s Republic of China; |
| 推荐引用方式 GB/T 7714 | Li RZ,Mao JR,Yang, Yuan-Pei,et al. Time Evolution of Optical Darkness in Gamma-Ray Burst Afterglow: The Case of GRB 240825A[J]. ASTROPHYSICAL JOURNAL,2026,997(1). |
| APA | 李睿智.,毛基荣.,Yang, Yuan-Pei.,王柏廷.,宋非凡.,...&白金明.(2026).Time Evolution of Optical Darkness in Gamma-Ray Burst Afterglow: The Case of GRB 240825A.ASTROPHYSICAL JOURNAL,997(1). |
| MLA | 李睿智,et al."Time Evolution of Optical Darkness in Gamma-Ray Burst Afterglow: The Case of GRB 240825A".ASTROPHYSICAL JOURNAL 997.1(2026). |
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来源：云南天文台
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