| GRB090111: extra soft steep-decay emission and peculiar rebrightening | |
Margutti, R1,2; Sakamoto, T3; Chincarini, G1,2; Guidorzi, C2,4; Mao JR(毛基荣)2,5 ; Pasotti, F2; Burrows, D6; D'Avanzo, P1; Campana, S2; Barthelmy, SD3; Gehrels, N3; Margutti, R (reprint author), Univ Milano Bicocca, Pza Sci 3, I-20126 Milan, Italy.
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| 发表期刊 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 2009-11-21 | |
| 卷号 | 400期号:1页码:L1-L5 |
| DOI | 10.1111/j.1745-3933.2009.00747.x |
| 产权排序 | 第5完成单位 |
| 收录类别 | SCI |
| 关键词 | Radiation Mechanisms: Non-thermal Gamma-rays: Bursts X-rays: Individual: Grb090111 |
| 摘要 | We present a detailed study of GRB090111, focusing on its extra soft power-law photon index Gamma > 5 at the very steep-decay phase emission (power-law index alpha = 5.1, steeper than 96 per cent of gamma-ray bursts detected by Swift) and the following peculiar X-ray rebrightening. Our spectral analysis supports the hypothesis of a comoving band spectrum with the peak of the nu F(nu) spectrum evolving with time to lower values: a period of higher temporal variability in the 1-2 keV light curve ends when the E(peak) evolves outside the energy band. The X-ray rebrightening shows extreme temporal properties when compared to a homogeneous sample of 82 early flares detected by Swift. While an internal origin cannot be excluded, we show these properties to be consistent with the energy injection in refreshed shocks produced by slow shells colliding with the fastest ones from behind, well after the internal shocks that are believed to give rise to the prompt emission have ceased. |
| 项目资助者 | ASI [SWIFT I/011/07/0] ; Ministry of University and Research of Italy [PRIN MIUR 2007TNYZXL] ; MAE ; University of Milano Bicocca (Italy) |
| 语种 | 英语 |
| 学科领域 | Astronomy & Astrophysics |
| 文章类型 | Article |
| ISSN | 0035-8711 |
| URL | 查看原文 |
| WOS记录号 | WOS:000271708900001 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | GAMMA-RAY BURSTS ; SWIFT-XRT OBSERVATIONS ; SPECTRAL EVOLUTION ; AFTERGLOW EMISSION ; ALERT TELESCOPE ; 1ST SURVEY ; DENSITY ; DIVERSITY ; FLASHES ; MISSION |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/4973 |
| 专题 | 高能天体物理研究组 |
| 通讯作者 | Margutti, R (reprint author), Univ Milano Bicocca, Pza Sci 3, I-20126 Milan, Italy. |
| 作者单位 | 1.Università degli studi Milano Bicocca, P.za della Scienza 3, Milano 20126, Italy 2.INAF Osservatorio Astronomico di Brera, via Bianchi 46, Merate 23807, Italy 3.NASA/Goddard Space Flight Center, Greenbelt, MD 20771, USA 4.Dipartimento di Fisica, Università di Ferrara, via Saragat 1, I-44100, Ferrara, Italy 5.Yunnan Observatory, Chinese Academy of Sciences, Kunming, Yunnan Province, China 6.Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park, PA 16802, USA |
| 推荐引用方式 GB/T 7714 | Margutti, R,Sakamoto, T,Chincarini, G,et al. GRB090111: extra soft steep-decay emission and peculiar rebrightening[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2009,400(1):L1-L5. |
| APA | Margutti, R.,Sakamoto, T.,Chincarini, G.,Guidorzi, C.,Mao JR.,...&Margutti, R .(2009).GRB090111: extra soft steep-decay emission and peculiar rebrightening.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,400(1),L1-L5. |
| MLA | Margutti, R,et al."GRB090111: extra soft steep-decay emission and peculiar rebrightening".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 400.1(2009):L1-L5. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| GRB090111_ extra sof（620KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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