J
2008
Off-equatorial orbits in strong gravitational fields near compact objects
STUCHLÍK, Zdeněk and Jiří KOVÁŘ
Basic information
Original name
Off-equatorial orbits in strong gravitational fields near compact objects
Edition
Classical and Quantum Gravity, GB - Spojené království Velké Británie a, 2008, 0264-9381
Other information
Type of outcome
Článek v odborném periodiku
Field of Study
10308 Astronomy
Confidentiality degree
není předmětem státního či obchodního tajemství
Organization unit
Faculty of Philosophy and Science in Opava
Keywords in English
gravitational field, black hole, ultracompact star, halo orbits
Tags
International impact, Reviewed
Links
GA202/06/0041, research and development project. GA205/07/0052, research and development project. MSM4781305903, plan (intention).
V originále
Near a black hole or an ultracompact star, motion of particles is governed by strong gravitational field. Electrically charged particles feel also electromagnetic force arising due to currents inside the star or plasma circling around. We study a possibility that the interplay between gravitational and electromagnetic action may allow for stable, energetically bound off-equatorial motion of charged particles. This would represent well-known generalized Störmer´s ?halo orbits?, which have been discussedin connection with the motion of dust grains in planetary magnetospheres. We demonstrate that such orbits exist and can be astrophysically relevant when a compact star or a black hole is endowed with a dipole-type magnetic field.
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