On existence of halo orbits in Kerr-Newman spacetimes

Details On existence of halo orbits in Kerr-Newman spacetimes On existence of halo orbits in Kerr-Newman spacetimes

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ragt.meet..125k&link_type=abstract

Proceedings of RAGtime 8/9: Workshops on black holes and neutron stars, 15-19/19-21 September, 2006/2007, Hradec nad Moravicí, O

Astronomy and Astrophysics

Astrophysics

Kerr-Newman Spacetime, Black Hole, Naked Singularity, Charged Particle, Magnetic Field, Halo Orbits

Scientific paper

Being inspired by existence of non-equatorial circular (halo) stable orbits of charged particles in composite of gravitational, dipole magnetic and co-rotational electric fields near some planets, we find possible existence of these orbits in strong gravitational fields described by the Kerr-Newman geometry. By using the general relativistic inertial forces formalism combined with the effective potential approach, we show that the stable halo orbits do exist there. But it seems that they are out of the astrophysical importance, being hidden under the inner black-hole horizon, or appearing in the naked singularity spacetimes.

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