An energetic blast wave from the 2004 December 27 giant flare of the soft gamma-ray repeater SGR 1806-20
文献类型：期刊论文
| 作者 | Wang, XY; Wu, XF ; Fan, YZ; Dai, ZG; Zhang, B
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| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2005-04-10 |
| 卷号 | 623期号:1页码:L29-L32 |
| 关键词 | gamma rays : bursts ISM : jets and outflows stars : individual (SGR 1806-20) |
| ISSN号 | 0004-637X |
| 英文摘要 | Recent follow-up observations of the 2004 December 27 giant flare of SGR 1806 - 20 have detected a multiple-frequency radio afterglow from 240 MHz to 8.46 GHz, extending in time from a week to about a month after the flare. The angular size of the source has also been measured for the first time. Here we show that this radio afterglow provides the first clear evidence of an energetic blast wave sweeping up its surrounding medium and producing a synchrotron afterglow, the same mechanism as has been established for gamma-ray burst afterglows. The optical afterglow is expected to have been intrinsically as bright as m(R) similar or equal to 13 at t less than or similar to 0.1 days after the flare, but very heavy extinction due to the low Galactic latitude of the source would have made detection difficult. Rapid infrared follow-up observations of giant flares are therefore crucial for low-latitude soft gamma-ray repeaters (SGRs), while for high-latitude SGRs ( e. g., SGR 0526 - 66), rapid follow-up should result in the identification of possible optical afterglows. Rapid multiwavelength follow-up will also provide more detailed information on the early evolution of the fireball, as well as its composition. |
| 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] | PHYSICAL PARAMETERS ; RADIATIVE MECHANISM ; SGR 1900+14 ; BURSTS ; AFTERGLOWS ; SGR1900+14 ; PULSAR ; MODELS ; STARS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000228197900008 |
| 公开日期 | 2012-03-07 |
| 源URL | [http://159.226.72.40/handle/332002/4096]  |
| 专题 | 紫金山天文台_南极天文中心 |
| 作者单位 | 1.Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China 2.Univ Nevada, Dept Phys, Las Vegas, NV 89154 USA 3.Acad Sinica, Purple Mt Observ, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, XY,Wu, XF,Fan, YZ,et al. An energetic blast wave from the 2004 December 27 giant flare of the soft gamma-ray repeater SGR 1806-20[J]. ASTROPHYSICAL JOURNAL,2005,623(1):L29-L32. |
| APA | Wang, XY,Wu, XF,Fan, YZ,Dai, ZG,&Zhang, B.(2005).An energetic blast wave from the 2004 December 27 giant flare of the soft gamma-ray repeater SGR 1806-20.ASTROPHYSICAL JOURNAL,623(1),L29-L32. |
| MLA | Wang, XY,et al."An energetic blast wave from the 2004 December 27 giant flare of the soft gamma-ray repeater SGR 1806-20".ASTROPHYSICAL JOURNAL 623.1(2005):L29-L32. |
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来源：紫金山天文台
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