THE BULK LORENTZ FACTOR OF OUTFLOW POWERING X-RAY FLARE IN GAMMA-RAY BURST AFTERGLOW
文献类型：期刊论文
| 作者 | Jin, Zhi-Ping ; Fan, Yi-Zhong; Wei, Da-Ming
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| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2010-12-01 |
| 卷号 | 724期号:2页码:861-865 |
| 关键词 | gamma-ray burst: general radiation mechanisms: non-thermal X-rays: general |
| ISSN号 | 0004-637X |
| 英文摘要 | We develop two methods to estimate the bulk Lorentz factor of X-ray flare outflow. In the first method, the outflow is assumed to be baryonic and is accelerated by the thermal pressure, for which the final bulk Lorentz factor is limited by the outflow luminosity as well as the initial radius of the outflow getting accelerated. Such a method may be applied to a considerable fraction of flares. The second method, based on the curvature effect interpretation of the quick decline of the flare, can give a tightly constrained estimate of the bulk Lorentz factor but can only be applied to a few giant flares. The results obtained in these two different ways are consistent with each other. The obtained bulk Lorentz factor (or just upper limit) of the X-ray flare outflows, ranging from ten to a few hundreds, is generally smaller than that of the gamma-ray burst outflows. |
| 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] | INTERNAL-SHOCK MODEL ; LIGHT CURVES ; 1ST SURVEY ; SWIFT ; FIREBALLS ; EMISSION ; ENVIRONMENT ; GRB-011121 ; ENERGETICS ; ORIGIN |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000284149000004 |
| 公开日期 | 2011-11-23 |
| 源URL | [http://159.226.72.40/handle/332002/1151]  |
| 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 | Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jin, Zhi-Ping,Fan, Yi-Zhong,Wei, Da-Ming. THE BULK LORENTZ FACTOR OF OUTFLOW POWERING X-RAY FLARE IN GAMMA-RAY BURST AFTERGLOW[J]. ASTROPHYSICAL JOURNAL,2010,724(2):861-865. |
| APA | Jin, Zhi-Ping,Fan, Yi-Zhong,&Wei, Da-Ming.(2010).THE BULK LORENTZ FACTOR OF OUTFLOW POWERING X-RAY FLARE IN GAMMA-RAY BURST AFTERGLOW.ASTROPHYSICAL JOURNAL,724(2),861-865. |
| MLA | Jin, Zhi-Ping,et al."THE BULK LORENTZ FACTOR OF OUTFLOW POWERING X-RAY FLARE IN GAMMA-RAY BURST AFTERGLOW".ASTROPHYSICAL JOURNAL 724.2(2010):861-865. |
入库方式： OAI收割
来源：紫金山天文台
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