King, A. R. and Pringle, J. E. (2021) Can the Blandford–Znajek Mechanism Power Steady Jets? The Astrophysical Journal Letters, 918 (1). L22. ISSN 2041-8205
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Abstract
We consider the Blandford–Znajek (BZ) mechanism for extracting black hole spin energy to drive astrophysical jets. Analyses of the BZ mechanism generally take no account of any electric charge on the black hole. But, as noted by Wald and others, if the medium surrounding the black hole is an ionized plasma with mobile charges, then a spinning hole quickly acquires an electric charge. The effect of this charge is to nullify the electric field structures which drive the BZ mechanism. Since jets are now observed in a wide variety of classes of accreting objects, most of which do not contain a central black hole, it seems likely that the jet-driving mechanism in all astrophysical objects uses energy directly from the accretion disk, rather than black hole spin.
Item Type: | Article |
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Subjects: | East Asian Archive > Physics and Astronomy |
Depositing User: | Unnamed user with email support@eastasianarchive.com |
Date Deposited: | 08 May 2023 07:07 |
Last Modified: | 22 Jun 2024 09:24 |
URI: | http://library.eprintdigipress.com/id/eprint/679 |