Modeling the hard states of XTE J1550-564 during its 2000 outburst
文献类型：期刊论文
| 作者 | Yuan, Feng ; Zdziarski, Andrzej A.; Xue, Yongquan; Wu, Xue-Bing
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2007-04-10 |
| 卷号 | 659期号:1页码:541-548 |
| 关键词 | accretion black hole physics ISM : jets and outflows stars : individual (XTE J1550-564) X-rays : stars accretion disks |
| 英文摘要 | We study the hard states of the black hole binary XTE J1550-564 during its 2000 outburst. In order to explain those states at their highest luminosities, L similar to 10% of the Eddington luminosity, L-E, we propose a specific hot accretion flow model. We point out that the highest values of the hard-state L are substantially above the L that an advection-dominated accretion flow can produce, similar to 0.4 alpha L-2(E), which is only similar to 3%-4% of L-E even for alpha as high as 0.3. On the other hand, we successfully explain the hard states with L similar to 0.04-0.10 using the luminous hot accretion flow (LHAF) model. As 0.10L(E) is also roughly the highest luminosity an LHAF can produce, such agreement between the predicted and observed highest luminosities itself provides strong support for this model. We then study multiwaveband spectral variability during the 2000 outburst. In addition to the primary maxima in the optical light curves, secondary maxima were detected after the transition from the very high state to the hard state. We show that the secondary maxima are well modeled as synchrotron emission from a jet formed during the state transition. We argue that the absence of a corresponding secondary peak in the X-ray light curve indicates that the X-ray jet emission, regardless of its radiative process, synchrotron or Comptonization, is not important in the hard state as compared with the emission from the accretion flow. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | 星系与宇宙学研究中心 |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | ADVECTION-DOMINATED ACCRETION ; X-RAY BINARIES ; CANDIDATE XTE J1550-564 ; ACTIVE GALACTIC NUCLEI ; BLACK-HOLE ACCRETION ; MULTIWAVELENGTH OBSERVATIONS ; MICROQUASAR XTE-J1550-564 ; SPECTRAL OBSERVATIONS ; CENTRAL REGIONS ; SAGITTARIUS-A |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000245773300044 |
| 公开日期 | 2010-11-08 |
| 源URL | [http://119.78.226.72//handle/331011/12637]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 2.Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA 3.Shanghai Astron Observ, JOINGC, Shanghai, Peoples R China 4.Univ Sci & Technol China, Hefei, Peoples R China 5.Ctr Astron Mikolaja Kopernika, PL-00716 Warsaw, Poland 6.Peking Univ, Dept Astron, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yuan, Feng,Zdziarski, Andrzej A.,Xue, Yongquan,et al. Modeling the hard states of XTE J1550-564 during its 2000 outburst[J]. ASTROPHYSICAL JOURNAL,2007,659(1):541-548. |
| APA | Yuan, Feng,Zdziarski, Andrzej A.,Xue, Yongquan,&Wu, Xue-Bing.(2007).Modeling the hard states of XTE J1550-564 during its 2000 outburst.ASTROPHYSICAL JOURNAL,659(1),541-548. |
| MLA | Yuan, Feng,et al."Modeling the hard states of XTE J1550-564 during its 2000 outburst".ASTROPHYSICAL JOURNAL 659.1(2007):541-548. |
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来源：上海天文台
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