The X-ray afterglow of GRB 081109A: clue to the wind bubble structure
文献类型：期刊论文
| 作者 | Jin, Z. P.1,2; Xu, D.3; Covino, S.4; D'Avanzo, P.4; Antonelli, A.5; Fan, Y. Z.1,6; Wei, D. M.1 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2009-12-21 |
| 卷号 | 400期号:4页码:1829-1834 |
| 关键词 | radiation mechanisms: non-thermal ISM: jets and outflows gamma-rays: bursts |
| ISSN号 | 0035-8711 |
| 产权排序 | 产权排序 |
| 英文摘要 | We present the prompt Burst Alert Telescope and afterglow X-ray Telescope data of Swift-discovered GRB 081109A up to similar to 5 x 105 s after the trigger, and the early ground-based optical followups. The temporal and spectral indices of the X-ray afterglow emission change remarkably. We interpret this as the gamma-ray burst jet first traversing the freely expanding supersonic stellar wind of the progenitor with density varying as proportional to r-2. Then, after approximately 300 s the jet traverses into a region of apparent constant density similar to that expected in the stalled-wind region of a stellar wind bubble or the interstellar medium. The optical afterglow data are generally consistent with such a scenario. Our best numerical model has a wind density parameter A(*) similar to 0.02, a density of the stalled wind n similar to 0.12 cm-3 and a transition radius similar to 4.5 x 1017 cm. Such a transition radius is smaller than that predicted by numerical simulations of the stellar wind bubbles and may be due to a rapidly evolving wind of the progenitor close to the time of its core-collapse. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | BURST AFTERGLOWS ; MASSIVE STARS ; REVERSE SHOCK ; LIGHT CURVES ; TELESCOPE ; REM ; PROGENITORS ; ENVIRONMENT ; MODELS |
| 收录类别 | SCI |
| 资助信息 | 国科图 |
| 语种 | 英语 |
| WOS记录号 | WOS:000272532100016 |
| 公开日期 | 2011-12-08 |
| 源URL | [http://159.226.72.40/handle/332002/1607]  |
| 专题 | 紫金山天文台_宇宙伽马暴、中子星及相关物理研究团组 |
| 作者单位 | 1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100012, Peoples R China 3.Univ Copenhagen, Niels Bohr Inst, Dark Cosmol Ctr, DK-2100 Copenhagen, Denmark 4.INAF Brera Astron Observ, I-23807 Merate, LC, Italy 5.INAF Rome Astron Observ, I-00044 Rome, Italy 6.Univ Copenhagen, Niels Bohr Inst, Niels Bohr Int Acad, DK-2100 Copenhagen, Denmark |
| 推荐引用方式 GB/T 7714 | Jin, Z. P.,Xu, D.,Covino, S.,et al. The X-ray afterglow of GRB 081109A: clue to the wind bubble structure[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2009,400(4):1829-1834. |
| APA | Jin, Z. P..,Xu, D..,Covino, S..,D'Avanzo, P..,Antonelli, A..,...&Wei, D. M..(2009).The X-ray afterglow of GRB 081109A: clue to the wind bubble structure.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,400(4),1829-1834. |
| MLA | Jin, Z. P.,et al."The X-ray afterglow of GRB 081109A: clue to the wind bubble structure".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 400.4(2009):1829-1834. |
入库方式： OAI收割
来源：紫金山天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。