| Screw Instability in Black Hole Magnetosphere and kHz QPOs in X-Ray Binaries |
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| 作者姓名： | 姚国政 汪定雄 马任意 |
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| 作者单位： | DepartmentofPhysics,HuazhongUniversityofScienceandTechnology,Wuhan430074 |
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| 摘 要： | Screw instability of the magnetic field connecting a rotating black hole (BH) with its surrounding disc is discussed in coexistence with the Blandford-Znajek (BZ) process and the magnetic coupling (MC) process. A scenario for kilohertz quasi-periodic oscillations (kHz QPOs) in x-ray binaries is proposed by introducing inductance components in the equivalent circuit for BH magnetosphere. It turns out that the period related to the screw instability is consistent with the observations of kHz QPO x-ray binaries.
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| 关 键 词： | 螺旋不稳定性 黑洞磁性圈 X射线 天体物理学 半周期振动 |
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