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

Language

English

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

UT WoS

000255897000012

Keywords in English

gravitational field, black hole, ultracompact star, halo orbits

Tags

Tags

International impact, Reviewed

Links

GA202/06/0041, research and development project. GA205/07/0052, research and development project. MSM4781305903, plan (intention).
Změněno: 21/12/2020 12:24, Mgr. Pavlína Jalůvková

Abstract

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.