Speaker
Zdenek Stuchlik
(Research Centre of Theoretical Physics and Astrophysics, Institute of Physics, Silesian University in Opava)
Description
The magnetic and radiative versions of the Penrose process of extraction of the rotation energy of a magnetized black hole are discussed and their astrophysical relevance is demonstrated. It is shown that realistic magnetized supermassive black holes with mass larger than 10^{9} Solar masses could accelerate protons up to energy 10^{22}eV, while the Srg A* black hole is able to accelerate protons up to 10^{16}eV. The radiative Penrose process due to the radiation of negative-energy photons in the black hole ergosphere could increase energy of protons, properly moving in the black hole ergosphere, at about one order, leading to observationally interesting signatures at the argosphere boundary.
Primary author
Zdenek Stuchlik
(Research Centre of Theoretical Physics and Astrophysics, Institute of Physics, Silesian University in Opava)
