Titlebook: Magnetohydrodynamics in Binary Stars; C. G. Campbell Book 2018Latest edition Springer Nature Switzerland AG 2018 AM Herculis stars.Accreti

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Intrinsic Magnetism in Accretion Discs,ndard mean-field dynamos are considered, which can generate large-scale magnetic fields in discs. Toroidal magnetic field is generated by the shearing of the radial field, while turbulence with Coriolis force and vertical stratification lead to the .-effect which converts toroidal field to poloidal

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Nomadic

Stellar Magnetic Winds,es the generation of large-scale magnetic fields in such stars very likely, and magnetically influenced wind flows from the stellar surface would then lead to magnetic braking. The secondary would be spun down to an under-synchronous state and tides would then operate to spin the star up at the expe

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Accretion Disc Magnetic Winds, become collimated parallel to the disc rotation axis. It is known that a differentially rotating, turbulent disc can have a large-scale magnetic field generated by dynamo action. Magnetically channelled winds are effective at removing angular momentum from accretion discs, provided that the initial

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Book 2018Latest edition major revision of the first edition. The material has been updated and extended, including additional chapters on the origins of the stellar magnetic fields and accretion disc magnetic winds. A comprehensive account is given of the subject, from the early work up to the latest results. The unifying

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0067-0057 s in binary star systems.Adds new work on magnetic coupling .Magnetism in binary stars is an area of central importance in stellar astrophysics. The second edition of "Magnetohydrodynamics in Binary Stars" is a major revision of the first edition. The material has been updated and extended, includin

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AM Her Stars: Stream Channelling and the Accretion Torque,cretion torques are considered here, as well as the effects of partial field channelling. For a dipolar magnetic field and moderate degrees of asynchronism, the normal components of the accretion torque average to zero over a synodic rotation period, while the parallel component has a conservative averaged form for total field channelling.

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Disc Disruption and Accretion Curtains, vertical expansion due to magnetic heating. Expanding material can be accelerated through a sonic point and then flow through a magnetically channelled curtain region to accrete on to the star through a narrow shock region. A detailed study of disc disruption and the curtain flow is presented here.

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Stellar Magnetic Winds,ere, with particular emphasis on the fast rotator regime. This is applied to derive mass transfer rates in binaries with periods ≳ 3.0 h, for a range of laws relating the secondary’s surface magnetic field to its rotation rate. Explanations for the period gap, and why AM Herculis binaries appear not to be affected by the gap, are discussed.

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Magnetism in Binary Stars,scs..Sub-thermal magnetic fields lead to a magnetorotational instability in accretion discs which is believed to be the source of the turbulent viscosity needed to account for the inflow. Disc dynamos can generate large-scale magnetic fields which can lead to radial transport of angular momentum, or