On particle collisions in the gravitational field of the Kerr black hole

Understand

Scattering of particles in the gravitational field of Kerr black holes is considered.

• It is shown that scattering energy of particles in the centre of mass system can obtain very large values not only for extremal black holes but also for nonextremal ones existing in Nature.
• This can be used for explanation of still unresolved problem of the origin of ultrahigh energy cosmic rays observed in Auger experiment.
• Extraction of energy after the collision is investigated.