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

    Particle motion and Penrose processes around rotating regular black hole

    Zdeněk Stuchlík · 01 května, 2015 · Fyzika · 0 comments
    0

    Publication date: May 2015

    Abstract:
    The neutral particle motion around rotating regular black hole that was
    derived from the Ayón-Beato-García (ABG) black hole
    solution by the Newman-Janis algorithm in the preceding paper (Toshmatov
    et al., Phys. Rev. D, 89:104017, 2014) has been studied. The
    dependencies of the ISCO (innermost stable circular orbits along
    geodesics) and unstable orbits on the value of the electric charge of
    the rotating regular black hole have been shown. Energy extraction from
    the rotating regular black hole through various processes has been
    examined. We have found expression of the center of mass energy for the
    colliding neutral particles coming from infinity, based on the BSW
    (Baňados-Silk-West) mechanism. The electric charge Q of rotating
    regular black hole decreases the potential of the gravitational field as
    compared to the Kerr black hole and the particles demonstrate less bound
    energy at the circular geodesics. This causes an increase of efficiency
    of the energy extraction through BSW process in the presence of the
    electric charge Q from rotating regular black hole. Furthermore, we have
    studied the particle emission due to the BSW effect assuming that two
    neutral particles collide near the horizon of the rotating regular
    extremal black hole and produce another two particles. We have shown
    that efficiency of the energy extraction is less than the value 146.6 %
    being valid for the Kerr black hole. It has been also demonstrated that
    the efficiency of the energy extraction from the rotating regular black
    hole via the Penrose process decreases with the increase of the electric
    charge Q and is smaller in comparison to 20.7 % which is the value for
    the extreme Kerr black hole with the specific angular momentum a= M.

    Authors:
    Toshmatov, Bobir; Abdujabbarov, Ahmadjon; Ahmedov, Bobomurat; Stuchlík, Zdeněk;

    http://adsabs.harvard.edu/abs/2015Ap%26SS.357…41T

      Facebook   Pinterest   Twitter

    Leave a Comment! Zrušit odpověď na komentář

    You must be logged in to post a comment.
    Archivy
    Copyright © 2024 Zdeněk Stuchlík