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VLBI for probing large-scale magnetic structures of stars

Published online by Cambridge University Press:  25 May 2016

J.-F. Lestrade
Affiliation:
Observatoire de Paris-Meudon, CNRS-URA1757, F92195, Meudon, France

Abstract

By VLBI astrometry, we show that the two RSCVn type binaries, UX Ari and σ2 CrB, have a preferred site of radio emission which is the intra-system region. It is known that radio emission from these stars is from the gyro-synchrotron process associated with large-scale magnetic fields. High gravity in the intra-system region might favor dense magnetic loops. Interactions in this region between loops attached to the surfaces of the two stellar components might produce reconnections required for electron acceleration.

Type
Session II: “Direct Mapping: The Last Frontier”
Copyright
Copyright © Kluwer 1996 

References

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VLBI for probing large-scale magnetic structures of stars
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