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Magnetodynamical Processes in Interacting Magnetospheres of RS CVn Binaries

Published online by Cambridge University Press:  04 August 2017

Yutaka Uchida  and
Takashi Sakurai
Yutaka Uchida
Affiliation:
Tokyo Astronomical Observatory, University of Tokyo
Takashi Sakurai
Affiliation:
*Department of Astronomy, University of Tokyo

Abstract

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Magnetodynamical processes in RS CVn binaries are discussed in the scheme of Active-Longitude-Belt picture (Uchida and Sakurai, 1983) in which the “photometric wave” is due to a number of spot pairs which emerge, drift across, and submerge in the “active longitude belt” on the K-star. The formation of the corona and the origin of flares in these close binary systems having starspots are interpreted in terms of the reconnections of the magnetic flux tubes of the companion star with the emerging and submerging pairs of spots on the K star. The injection of the hot plasma into the large scale pole-to-spot connections is required to explain the extended corona with large emission measure, and we attribute this to the “sweeping-pinch” mechanism (Uchida and Shibata, 1984) associated with the relaxation of the toroidal component in the twisted magnetic flux tubes which emerge and reconnect with the flux tubes connecting pole and spots.

Type
Session IV
Information
Symposium - International Astronomical Union , Volume 107: Unstable Current Systems and Plasma Instabilities , 1985 , pp. 281 - 286
Copyright
Copyright © Reidel 1985 

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