GRB 060418 and 060607A: the medium surrounding the progenitor and the weak reverse shock emission
文献类型：期刊论文
| 作者 | Jin, Z. P.1,2; Fan, Y. Z.1,2,3 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2007-07-01 |
| 卷号 | 378期号:3页码:1043-1048 |
| ISSN号 | 0035-8711 |
| 关键词 | radiation mechanisms : non-thermal ISM : jets and outflows gamma-rays : bursts |
| 英文摘要 | We constrain the circumburst medium profile with the rise behaviour of the very early afterglow light curves of gamma-ray bursts (GRBs). Using this method, we find a constant and low-density medium profile for GRB 060418 and GRB 060607A, which is consistent with the inference from the late afterglow data. In addition, we show that the absence of the infrared flashes in these two afterglows is consistent with the standard hydrodynamical external reverse shock model. Although a highly magnetized model can explain the data, it is no longer demanded. A weak reverse shock in the standard hydrodynamical model is achievable if the typical synchrotron frequency is already below the band at the shock-crossing time. |
| 学科主题 | Astronomy & Astrophysics |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | GAMMA-RAY BURST ; EARLY OPTICAL AFTERGLOWS ; FIREBALL MODEL ; LIGHT CURVES ; POLARIZATION ; FLASH ; FLARES ; SUPERNOVA ; OUTFLOWS ; 041219A |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000248270400024 |
| 公开日期 | 2012-02-05 |
| 源URL | [http://159.226.72.40/handle/332002/2378]  |
| 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, Natl Astron Observ, Beijing 100012, Peoples R China 3.Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel |
| 推荐引用方式 GB/T 7714 | Jin, Z. P.,Fan, Y. Z.. GRB 060418 and 060607A: the medium surrounding the progenitor and the weak reverse shock emission[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2007,378(3):1043-1048. |
| APA | Jin, Z. P.,&Fan, Y. Z..(2007).GRB 060418 and 060607A: the medium surrounding the progenitor and the weak reverse shock emission.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,378(3),1043-1048. |
| MLA | Jin, Z. P.,et al."GRB 060418 and 060607A: the medium surrounding the progenitor and the weak reverse shock emission".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 378.3(2007):1043-1048. |
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来源：紫金山天文台
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