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
In the original language
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.