LogoLogo
  • Bio
  • Fyzika
  • V médiích
  • Fotografie
  • Výstavy
  • Kontakt

    Off-equatorial orbits in strong gravitational fields near compact objects

    Zdeněk Stuchlík · Květen 01, 2008 · Fyzika · 0 comments
    0

    Publication date: May 2008

    Abstract:
    Near a black hole or an ultracompact star, the motion of particles is
    governed by a strong gravitational field. Electrically charged particles
    also feel the electromagnetic force arising due to currents inside the
    star or plasma circling around. We study the possibility that the
    interplay between gravitational and electromagnetic actions may allow
    for the stable, energetically bound off-equatorial motion of charged
    particles. This would represent the well-known generalized Störmer’s
    ‚halo orbits‘, which have been discussed in 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. In the case
    of the Kerr Newman solution, numerical analysis shows that the mutually
    connected gravitational and electromagnetic fields do not allow the
    existence of stable halo orbits above the outer horizon of black holes.
    Such orbits are either hidden under the inner black-hole horizon, or
    they require the presence of a naked singularity.

    Authors:
    Kovář, Jiří; Stuchlík, Zdeněk; Karas, Vladimír;

    https://ui.adsabs.harvard.edu/abs/2008CQGra..25i5011K

      Facebook   Pinterest   Twitter   Google+

    Leave a Comment! Zrušit odpověď na komentář

    You must be logged in to post a comment.
    Archivy
    Copyright © 2016 Zdeněk Stuchlík