| Disk-Corona Model in Active Galactic Nuclei： an Observational Test |
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| 作者姓名： | Fang Yang Chen Hu Yan-Mei Chen Jian-Min Wang |
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| 作者单位： | Fang Yang1，2，Chen Hu3，2，Yan-Mei Chen1，2 and Jian-Min Wang1 1 Key Laboratory for Particle Astrophysics，Institute of High Energy Physics，Chinese Academy of Sciences，Beijing 100049; 2 Graduate School of Chinese Academy of Sciences，Beijing 100049 3 National Astronomical Observatories，Chinese Academy of Sciences，Beijing 100012 |
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| 基金项目： | 国家自然科学基金;国家自然科学基金 |
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| 摘 要： | We compiled a sample of 98 radio-quiet active galactic nuclei observed by ASCA, Chandra, XMM-Newton, INTEGRAL and Swift with the aim of testing the formation of hot corona and the magnetic shear stress operating in a disk-corona system. We found a strong correlation between the hard X-ray luminosity, bolometric luminosity L Bol and Eddington luminosity LEdd, in the sense that the fraction f of hard X-ray to the bolometric luminosity is inversely proportional to the Eddington ratio. This correlation favors the shear stress tensor being of the form of trφ∝ Pgas, with which the disk-corona structure is stable.
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| 关 键 词： | accretion accretion disks — galaxies: active — magnetic fields |
| 修稿时间： | 2006-07-28 |
Disk-Corona Model in Active Galactic Nuclei:an Observational Test |
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| Fang Yang Chen Hu Yan-Mei Chen Jian-Min Wang.Disk-Corona Model in Active Galactic Nuclei:an Observational Test[J].Chinese Journal of Astronomy and Astrophysics,2007,7(3):353-363. |
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| Authors: | Fang Yang Chen Hu Yan-Mei Chen Jian-Min Wang |
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| Abstract: | |
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| Keywords: | accretion accretion disks-galaxies:active-magnetic fields |
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