Black hole aurora in a black hole magnetosphere

被引:0
作者
Takahashi, Masaaki Takahashi [1 ]
机构
[1] Department of Physics and Astronomy, Aichi University of Education, Aichi 448-8542, Kariya, Japan
来源
Proceedings of the 16th Workshop on General Relativity and Gravitation in Japan, JGRG 2006 | 2006年
关键词
Gamma rays - Stars - Magnetohydrodynamics - Magnetoplasma - Gravitation - Active Galactic Nuclei - Black holes;
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摘要
1 present a model of high-energy emission sources generated by a standing magnetohydrodynamical (MHD) shock in a black hole magnetosphere. The black hole magnetosphere would be constructed around a black hole and an equatorial accretion disk, and can be considered as a model for a central engine of active galactic nuclei (AGNs) and gamma-ray bursts (GRBs). From the analysis of MHD shock conditions for accreting plasma onto a black hole, we obtain the restrictions on the flow's physical parameters, and examine the distribution of the shock front. Then, we find that an off-equatorial Aurora-like shaped hot plasma region is possible by the MHD shock formation when the magnetosphere rapidly rotates; the hot plasma region locates close to the event horizon. The emission from this off-equatorial sources would carry new information about the strong gravitational field to us.
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页码:239 / 242
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