The distinguishing signature of Magnetic Penrose Process
Abstract
In this Letter, we wish to point out that the distinguishing feature of Magnetic Penrose process (MPP) is its super high efficiency exceeding (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 electromagnetic field, is Blandford-Znajek mechanism (BZ), which could be envisaged as high magnetic field limit MPP as it requires threshold magnetic field of order G. Recent simulation studies of fully relativistic magnetohydrodynamic 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.
Keywords
Cite
@article{arxiv.1804.09679,
title = {The distinguishing signature of Magnetic Penrose Process},
author = {Naresh Dadhich and Arman Tursunov and Bobomurat Ahmedov and Zdeněk Stuchlík},
journal= {arXiv preprint arXiv:1804.09679},
year = {2018}
}
Comments
6 pages, 1 figure, accepted to MNRAS Letters