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    Acceleration of particles in spacetimes of black string

    Zdeněk Stuchlík · Prosinec 01, 2013 · Fyzika · 0 comments
    0

    Publication date: Dec 2013

    Abstract:
    The particle acceleration mechanism in S2×R1
    topology, namely, in the spacetime of the five-dimensional compact black
    string, has been studied. The expression of center-of-mass energy of the
    colliding neutral particles near static black string has been found. The
    collision of a charged particle moving at the innermost stable circular
    orbit with a neutral particle coming from infinity has been considered
    when black string is immersed in external uniform magnetic field. It has
    been shown that the unlimited center-of-mass energy can be approached in
    the case of the extremal rotation of the black string which is similar
    to the analogous effect in Kerr spacetime. We have also obtained that
    the scattering energy of particles in the center-of-mass system can take
    arbitrarily large values not only for extremal black string but also for
    the nonextremal one. It has been derived that the presence of the extra
    dimension can, in principle, increase the upper limit of efficiency of
    energy extraction from the extremely rotating black string up to 203%
    versus 143% which can be extracted from the extreme Kerr black hole.

    Authors:
    Tursunov, Arman; Kološ, Martin; Abdujabbarov, Ahmadjon; Ahmedov, Bobomurat; Stuchlík, Zdeněk;

    https://ui.adsabs.harvard.edu/abs/2013PhRvD..88l4001T

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