STUCHLÍK, Zdeněk. Penrose process: its variants and astrophysical applications. In RAGtime 23: 6-10 September, 2021 - Workshop on Black Holes and Neutron Stars. 2021.
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Basic information
Original name Penrose process: its variants and astrophysical applications
Authors STUCHLÍK, Zdeněk.
Edition RAGtime 23: 6-10 September, 2021 - Workshop on Black Holes and Neutron Stars, 2021.
Other information
Original language English
Type of outcome Presentations at conferences
Country of publisher Czech Republic
Confidentiality degree is not subject to a state or trade secret
WWW URL
Organization unit Institute of physics in Opava
Tags FÚ, FÚ2021, RAGtime 23
Tags International impact
Changed by Changed by: Ing. Petra Ryšavá, učo 5220. Changed: 12/11/2021 21:19.
Abstract
The Penrose process governing extraction of energy from black holes by the simple effects related to uncharged or charged particles is discussed in most of the known variants related to Kerr black holes and Kerr naked singularities, or to electrically charged static black holes. Attention is focused on the magnetic Penrose process in its extremely efficient version enabling extreme acceleration of charged particles after ionization of uncharged matter, giving explanation of the ultra-high energy cosmic rays. The effect of radiative self-force of accelerated particles is briefly discussed. It is shown that in the ergosphere of Kerr black holes it could lead to a new verion of radiative Penrose process due to radiation of photons with negative energy as related to distant static observers that cause the extraction of black hole rotational energy in this version of the Penrose process.
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