GT7 - Exact Solutions (physical aspects) |
Speaker_ |
Mitskievich, Nikolai V. |
Co-autors |
Luis I. Lopez Benitez |
Talk _ |
Zeeman-type dragging in the Kerr--Newman and NUT spacetimes |
Abstract _ |
In Boyer--Lindquist coordinates in the Kerr--Newman spacetime, a test neutral particle in a circular orbit in the equatorial plane outside the ergosphere executes a motion with the period differing from that executed around a purely Kerr centre by the presence of the charge term only. Thus the meeting point of two particles moving along the same orbit in opposite directions is rotating counter the rotation of the Kerr--Newman centre. In the Taub--NUT spacetime, the motion of a test particle occurs in similar situation in the plane moved away from the ``equatorial plane'' by the distance determined by the central mass, NUT parameter $k$ and the orbit radius, in directions upwards or downwards, depending on relative signs of $k$ and the angular momentum of the particle. |