Astronomy and Astrophysics – Astrophysics – Cosmology and Extragalactic Astrophysics
Scientific paper
2010-10-13
Phys.Rev.D83:023004,2011
Astronomy and Astrophysics
Astrophysics
Cosmology and Extragalactic Astrophysics
10 Pages, 5 Figures
Scientific paper
10.1103/PhysRevD.83.023004
The escape fraction at infinity is evaluated for massless particles produced in collisions of weakly interacting particles accreted into a density spike near the particle horizon of an extremal Kerr black hole, for the case of equatorial orbits. We compare with the Schwarzschild case, and argue that in the case of extremal black holes, redshifted signatures can be produced that could potentially explore the physics of particle collisions at centre of mass energies that extend beyond those of any feasible terrestrial accelerator.
Banados Maximo
Hassanain Babiker
Silk Joseph
West Stephen M.
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