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arXiv 0802.4349gr-qcastro-ph
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带重磁荷旋转致密引力物体的粒子运动和电磁场

Particle Motion and Electromagnetic Fields of Rotating Compact Gravitating Objects with Gravitomagnetic Charge

A. A. Abdujabbarov, B. J. Ahmedov, V. G. Kagramanova

摘要:

本文研究了Kerr-Taub-NUT紧凑体(i)在沿轴对称轴的均匀磁场中(ii)在由电流回路产生的偶极磁场中所产生的电磁场的精确解。研究了在不同的外磁场和NUT参数下,带电粒子在磁场中绕Kerr-Taub-NUT引力源运动的有效势。在这两种情况下,NUT参数和磁场的存在使稳定的圆形轨道向中心引力物体的方向移动。最后,我们找到了缓慢旋转的磁化NUT星的外部背景时空中的麦克斯韦方程组的解析解。恒星被认为是孤立的,在真空中,单极配置模型的恒星磁场。

英文摘要:

The exact solution for the electromagnetic field occuring when the Kerr-Taub-NUT compact object is immersed (i) in an originally uniform magnetic field aligned along the axis of axial symmetry (ii) in dipolar magnetic field generated by current loop has been investigated. Effective potential of motion of charged test particle around Kerr-Taub-NUT gravitational source immersed in magnetic field with different values of external magnetic field and NUT parameter has been also investigated. In both cases presence of NUT parameter and magnetic field shifts stable circular orbits in the direction of the central gravitating object. Finally we find analytical solutions of Maxwell equations in the external background spacetime of a slowly rotating magnetized NUT star. The star is considered isolated and in vacuum, with monopolar configuration model for the stellar magnetic field.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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