Nixon, C.J. orcid.org/0000-0002-2137-4146 and Pringle, J.E. (2020) Strong surface outflows on accretion discs. Astronomy & Astrophysics, 636. A34. ISSN 0004-6361
Abstract
In order to provide an explanation for the unexpected radial brightness distribution of the steady accretion discs seen in nova-like variables, we have recently proposed that the accretion energy is redistributed outwards by means of strong, magnetically driven surface flows. In this paper we note that the “powerful, rotating disc winds” observed in the soft states of black hole X-ray binaries, and also in the disc around a magnetised neutron star in Her X–1, have the properties of the outflows we recently postulated to exist in the nova-like variable accretion discs around white dwarfs. The relevant properties are that the flows are not winds, but are instead bound flows (travelling at less than the escape velocity) and that the mass fluxes in the flows are a substantial fraction of the accretion rate in the disc.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © ESO 2020. This is an author produced version of an article published in Astronomy & Astrophysics. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | accretion, accretion disks; magnetic fields; magnetohydrodynamics (MHD); novae, cataclysmic variables; black hole physics; X-rays: binaries |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) > Astrophysics (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 24 Nov 2023 15:49 |
Last Modified: | 24 Nov 2023 15:49 |
Status: | Published |
Publisher: | EDP Sciences |
Identification Number: | 10.1051/0004-6361/202037772 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:205766 |