Penrose Process: Its Variants and Astrophysical Applications

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19630%2F21%3AA0000109" target="_blank" >RIV/47813059:19630/21:A0000109 - isvavai.cz</a>

Result on the web

<a href="https://www.mdpi.com/2218-1997/7/11/416" target="_blank" >https://www.mdpi.com/2218-1997/7/11/416</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/universe7110416" target="_blank" >10.3390/universe7110416</a>

Result language

angličtina

Original language name

Penrose Process: Its Variants and Astrophysical Applications

Original language description

We present a review of the Penrose process and its modifications in relation to the Kerr black holes and naked singularities (superspinars). We introduce the standard variant of this process, its magnetic version connected with magnetized Kerr black holes or naked singularities, the electric variant related to electrically charged Schwarzschild black holes, and the radiative Penrose process connected with charged particles radiating in the ergosphere of magnetized Kerr black holes or naked singularities. We discuss the astrophysical implications of the variants of the Penrose process, concentrating attention to the extreme regime of the magnetic Penrose process leading to extremely large acceleration of charged particles up to ultra-high energy E &amp; SIM;1022 eV around magnetized supermassive black holes with mass M &amp; SIM;1010M &amp; ODOT; and magnetic intensity B &amp; SIM;104 G. Similarly high energies can be obtained by the electric Penrose process. The extraordinary case is represented by the radiative Penrose process that can occur only around magnetized Kerr spacetimes but just inside their ergosphere, in contrast to the magnetic Penrose process that can occur in a more extended effective ergosphere determined by the intensity of the electromagnetic interaction. The explanation is simple, as the radiative Penrose process is closely related to radiated photons with negative energy whose existence is limited just to the ergosphere.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10308 - Astronomy (including astrophysics,space science)

Project

<a href="/en/project/GA19-03950S" target="_blank" >GA19-03950S: Testing strong gravity via black holes</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Universe

ISSN

2218-1997

e-ISSN

—

Volume of the periodical

7

Issue of the periodical within the volume

11

Country of publishing house

CH - SWITZERLAND

Number of pages

35

Pages from-to

„416-1“-„416-35“

UT code for WoS article

000724852200001

EID of the result in the Scopus database

2-s2.0-85119121935