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题名: The large-scale, decelerating X-ray jets from the microquasar XTE J1550-564: Evidence for external shocks caused by the jet-ISM interaction?
作者: Wang, XY; Dai, ZZ; Lu Tan(陆埮)
刊名: ASTROPHYSICS AND SPACE SCIENCE
出版日期: 2005
卷号: 297, 期号:1-4, 页码:155-166
关键词: stars : individual (XTE J1550-564) ; gamma rays : bursts ; ISM : jets and outflows, radiation ; mechanisms : non-thermal
学科分类: Astronomy & Astrophysics
DOI: 10.1007/s10509-005-7591-0
文章类型: Article
英文摘要: Large-scale, decelerating, relativistic X-ray jets from microquasar XTE J1550-564 has been recently discovered with Chandra by Corbel et al. ( 2002). We find that the dynamical evolution of the approaching jet at the late time is consistent with the well-known Sedov evolutionary phase R proportional to t(2/5). A trans-relativistic external shock dynamic model by analogy with the evolution of gamma-ray burst remnants, is shown to be able to fit the proper-motion data of the approaching jet reasonably well. The inferred interstellar medium density around the source is well below the canonical value n(ISM) similar to 1 cm(-3). The rapidly fading X-ray emission can be interpreted as synchrotron radiation from the non-thermal electrons in the adiabatically expanding ejecta. These electrons were accelerated by the reverse shock ( moving back into the ejecta) which becomes important when the inertia of the swept external matter leads to an appreciable slowing down of the original ejecta.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics
研究领域[WOS]: Astronomy & Astrophysics
关键词[WOS]: BURST AFTERGLOWS ; OPTICAL FLASH ; 433 SYSTEM ; EMISSION ; DYNAMICS ; RADIO ; MODEL ; PARAMETERS ; GALAXY
收录类别: ISTP ; SCI
语种: 英语
WOS记录号: WOS:000228545100017
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/10955
Appears in Collections:陆埮_期刊论文

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作者单位: 1.Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China
2.Chinese Acad Sci, Purple Mt Observ, Nanjing, Peoples R China

Recommended Citation:
王祥玉、戴子高、陆 埮.The Large-Scale, Decelerating X-ray Jets from the Microquasar Xte J1550-564: Evidence for External Shocks Caused by the Jet-Ism Interaction? ,Ap&SS,2005,297(155):
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文件名: 077-2005-ApSS-WaDL-The Large-Scale, Decelerating X-ray Jets from the MicroquasarXte J1550-564 Evidence for External Shocks Caused by the Jet-Ism Interaction-297#-155-166-tlt64975.pdf
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