Hellier, C (2007) Disc-Magnetosphere interactions in Cataclysmic Variable Stars. Proceedings of the International Astronomical Union, 3. ISSN 1743-9221

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Abstract

I review, from an observational perspective, the interactions of accretion discs with magnetic fields in cataclysmic variable stars. I start with systems where the accretion flows via a stream, and discuss the circumstances in which the stream forms into an accretion disc, pointing to stars which are close to this transition. I then turn to disc-fed systems and discuss what we know about how material threads on to field lines, as deduced from the pattern of accretion footprints on the white dwarf. I discuss whether distortions of the field lines are related to accretion torques and the changing spin periods of the white dwarfs. I also review the effect on the disc-magnetosphere interaction of disc-instability outbursts. Lastly, I discuss the temporary, dynamo-driven magnetospheres thought to occur in dwarf-nova outbursts, and whether slow-moving waves are excited at the inner edges of the disc.

Item Type: Article
Uncontrolled Keywords: astrophysics, accretion, accretion disks, magnetic fields, binaries, close, novae, cataclysmic variables, X-rays, stars
Subjects: Q Science > QC Physics
Divisions: Faculty of Natural Sciences > School of Physical and Geographical Sciences
Related URLs:
Depositing User: Symplectic
Date Deposited: 11 Mar 2015 13:58
Last Modified: 18 Jul 2017 10:50
URI: http://eprints.keele.ac.uk/id/eprint/319

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