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Model for how an accretion disk drives astrophysical jets and sheds angular momentum

Bellan, Paul M. (2018) Model for how an accretion disk drives astrophysical jets and sheds angular momentum. Plasma Physics and Controlled Fusion, 60 (1). Art. No. 014006. ISSN 0741-3335.

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Clumps of ions and neutrals in the weakly ionized plasma in an accretion disk are shown to follow trajectories analogous to those of fictitious 'metaparticles' having a charge to mass ratio reduced from that of an ion by the ionization fraction. A certain class of meta-particles have zero-canonical angular momentum and so spiral in towards the star. Accumulation of these meta-particles establishes a radial electric field that drives the electric current that flows in bidirectional astrophysical jets lying along the disk axis and provides forces that drive the jets. The entire process converts gravitational potential energy into jet energy while absorbing angular momentum from accreting material and shedding this angular momentum at near infinite radius.

Item Type:Article
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Bellan, Paul M.0000-0002-0886-8782
Additional Information:© 2017 IOP Publishing Ltd. Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Received 17 June 2017, revised 9 August 2017; Accepted for publication 14 August 2017; Published 12 October 2017. Supported by USDOE Grant DE-FG02-04ER54755 (USDOE/NSF Plasma Partnership).
Funding AgencyGrant Number
Department of Energy (DOE)DE-FG02-04ER54755
Subject Keywords:accretion disk, astrophysical jet, angular momentum, Hall MHD, dynamo, weakly ionized plasma, canonical angular momentum
Issue or Number:1
Record Number:CaltechAUTHORS:20170726-072910128
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Official Citation:Paul M Bellan 2018 Plasma Phys. Control. Fusion 60 014006
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:79379
Deposited By: George Porter
Deposited On:22 Aug 2017 16:52
Last Modified:12 Jul 2022 19:46

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