2018
The distinguishing signature of magnetic Penrose process
DADHICH, Naresh, Arman TURSUNOV, Bobomurat AHMEDOV and Zdeněk STUCHLÍKBasic information
Original name
The distinguishing signature of magnetic Penrose process
Authors
DADHICH, Naresh (356 India), Arman TURSUNOV (860 Uzbekistan, guarantor, belonging to the institution), Bobomurat AHMEDOV (860 Uzbekistan) and Zdeněk STUCHLÍK (203 Czech Republic, belonging to the institution)
Edition
Monthly Notices of the Royal Astronomical Society Letters, 2018, 0035-8711
Other information
Language
English
Type of outcome
Article in a journal
Field of Study
10308 Astronomy
Country of publisher
United Kingdom of Great Britain and Northern Ireland
Confidentiality degree
is not subject to a state or trade secret
References:
Impact factor
Impact factor: 5.231
RIV identification code
RIV/47813059:19240/18:A0000255
Organization unit
Faculty of Philosophy and Science in Opava
UT WoS
000450777200017
Keywords in English
black hole physics; magnetic field; relativistic processes
Tags
International impact, Reviewed
Links
GB14-37086G, research and development project. GJ16-03564Y, research and development project.
Changed: 23/4/2020 14:13, RNDr. Arman Tursunov, Ph.D.
Abstract
V originále
In this Letter, we wish to point out that the distinguishing feature of magnetic Penrose process (MPP) is its super high-efficiency exceeding 100 per cent (which was established in mid 1980s for discrete particle accretion) of extraction of rotational energy of a rotating black hole electromagnetically for a magnetic field of milli Gauss order. Another similar process, which is also driven by the electromagnetic field, is Blandford-Znajek mechanism (BZ) that could be envisaged as high magnetic field limit MPP as it requires threshold magnetic field of order 10^4 G. Recent simulation studies of fully relativistic magnetohydrodynamic (MHD) flows have borne out super high-efficiency signature of the process for high magnetic field regime; viz BZ. We would like to make a clear prediction that similar simulation studies of MHD flows for low magnetic field regime, where BZ would be inoperative, would also have super efficiency.