STUCHLÍK, Zdeněk and Jiří KOVÁŘ. Off-equatorial orbits in strong gravitational fields near compact objects. Classical and Quantum Gravity. GB - Spojené království Velké Británie a, 2008, vol. 25, No 9, p. 095011-095027. ISSN 0264-9381. Available from: https://dx.doi.org/10.1088/0264-9381/25/9/095011.
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Basic information
Original name Off-equatorial orbits in strong gravitational fields near compact objects
Authors STUCHLÍK, Zdeněk and Jiří KOVÁŘ.
Edition Classical and Quantum Gravity, GB - Spojené království Velké Británie a, 2008, 0264-9381.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10308 Astronomy
Confidentiality degree is not subject to a state or trade secret
Organization unit Faculty of Philosophy and Science in Opava
Doi http://dx.doi.org/10.1088/0264-9381/25/9/095011
UT WoS 000255897000012
Keywords in English gravitational field, black hole, ultracompact star, halo orbits
Tags UF
Tags International impact, Reviewed
Links GA202/06/0041, research and development project. GA205/07/0052, research and development project. MSM4781305903, plan (intention).
Changed by Changed by: Mgr. Pavlína Jalůvková, učo 25213. Changed: 21/12/2020 12:24.
Abstract
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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