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    Ultra-high-energy collisions of particles in the field of near-extreme Kehagias-Sfetsos naked singularities and their appearance to distant observers

    Zdeněk Stuchlík · 01 května, 2014 · Fyzika · 0 comments
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    Publication date: May 2014

    Abstract:
    We demonstrate that ultra-high-energy collisions of particles falling
    freely from rest at infinity can occur in the field of near-extreme
    Kehagias-Sfetsos naked singularities related to the Hořava
    gravity. However, the efficiency of escaping of created
    ultrarelativistic particles and the energy efficiency of the collisional
    process relative to distant observers are significantly lowered due to
    large gravitational redshift, which is substantially lower in comparison
    to those related to the collisions occurring close to the equatorial
    plane of near-extreme Kerr naked-singularity spacetimes. In the
    Kehagias-Sfetsos naked-singularity spacetimes, the energy efficiency
    relative to distant observers corresponds to the covariant energy of the
    colliding particles only. Finally, we demonstrate how the
    ultra-high-energy collisions are modified for charged particles if the
    Kehagias-Sfetsos naked singularities are immersed in a uniform magnetic
    field.

    Authors:
    Stuchlík, Zdeněk; Schee, Jan; Abdujabbarov, Ahmadjon;

    http://adsabs.harvard.edu/abs/2014PhRvD..89j4048S

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