| Two Kinds of Magnetic Connection in Black-Hole Accretion Disc |
| |
| 引用本文： | 李洋 汪定雄 甘朝明. Two Kinds of Magnetic Connection in Black-Hole Accretion Disc[J]. 中国物理快报, 2007, 24(5): 1421-1424 |
| |
| 作者姓名： | 李洋 汪定雄 甘朝明 |
| |
| 作者单位： | Department of Physics, Huazhong University of Science and Technology, Wuhan 430074 |
| |
| 基金项目： | Supported by the National Natural Science Foundation of China under Grant Nos 10173004, 10373006 and 10121503. |
| |
| 摘 要： | ![]()
We discuss two kinds of magnetic connection （MC） in the black hole （BH） accretion disc： the magnetic connection between the BH and the disc （MCHD） and that between the plunging region and the disc （MCPD）. The magnetic field configuration is produced by an electric current flowing at the inner edge of the disc. It turns out that the transfer direction of energy and angular momentum depends on the BH spin and a parameter λ for adjusting the angular velocities of the plunging matter, which corresponds to at most five regions in the disc. The effect of MCPD results in a much steeper emissivity than a standard accretion disc in the inner disc, however it fails to reach the observation range 4.3-5.5 in several objects, such as Seyfert 1 galaxy MCG-6-30-15, microquasars XTE J1650-500 and GX 399-4.
|
| 关 键 词： | 黑洞 磁场 磁联结 跳跃区域 |
| 收稿时间： | 2006-11-14 |
| 修稿时间： | 2006-11-14 |
Two Kinds of Magnetic Connection in Black-Hole Accretion Disc |
| |
| LI Yang, WANG Ding-Xiong, GAN Zhao-Ming. Two Kinds of Magnetic Connection in Black-Hole Accretion Disc[J]. Chinese Physics Letters, 2007, 24(5): 1421-1424 |
| |
| Authors: | LI Yang WANG Ding-Xiong GAN Zhao-Ming |
| |
| Affiliation: | Department of Physics, Huazhong University of Science and Technology, Wuhan 430074 |
| |
| Abstract: | ![]()
|
| |
| Keywords: | 97.60.Lf 98.62.Mw 98.62.Js |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《中国物理快报》浏览原始摘要信息 |
|
点击此处可从《中国物理快报》下载免费的PDF全文 |
