Black hole supercolliders
Abstract
We show that collisions between particles free falling from infinity and a disk of material plunging off the retrograde innermost stable circular orbit of a near-extremal Kerr black hole is the unique astronomically natural way in which to create a gravitational particle accelerator with center of mass energies at the 10's to 100's of teraelectronvolt range, in other words a supercollider.
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