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arXiv 1303.1644astro-ph.HE
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活动星系核中黑洞附近的磁场结构

On the structure of the magnetic field near a black hole in active galactic nuclei

V. S. Beskin, A. A. Zheltoukhov

摘要:

利用Grad-Shafranov方程,在假设视界附近磁场是径向的,喷流区域是均匀的(圆柱形)的基础上,考虑了黑洞磁层的一个新的解析模型.在这个模型中,我们成功地证明了靠近黑洞旋转轴的粒子的角速度可以小于黑洞角速度的一半。这一结果与最新的数值模拟结果一致。

英文摘要:

Using the Grad-Shafranov equation, we consider a new analytical model of the black hole magnetosphere based on the assumption that the magnetic field is radial near the horizon and uniform (cylindrical) in the jet region. Within this model, we have managed to show that the angular velocity of particles near the rotation axis of the black hole can be smaller than one half of the black hole angular velocity. This result is consistent with the latest numerical simulations.

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