DADHICH, Naresh, Arman TURSUNOV, Bobomurat AHMEDOV and Zdeněk STUCHLÍK. The distinguishing signature of magnetic Penrose process. Monthly Notices of the Royal Astronomical Society Letters. 2018, vol. 478, No 1, p. "L89"-"L94", 6 pp. ISSN 0035-8711. Available from: https://dx.doi.org/10.1093/mnrasl/sly073.
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Basic 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
Original 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
WWW URL
RIV identification code RIV/47813059:19240/18:A0000255
Organization unit Faculty of Philosophy and Science in Opava
Doi http://dx.doi.org/10.1093/mnrasl/sly073
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 by Changed by: RNDr. Arman Tursunov, Ph.D., učo 39715. Changed: 23/4/2020 14:13.
Abstract
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.
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