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Plasma Oscillations Inside Small Fluxtubes

Published online by Cambridge University Press:  27 September 2017

E. Wiehr  and
G. Lustig
E. Wiehr
Affiliation:
Institute for Astronomy, University of Graz/Austria
G. Lustig
Affiliation:
Institute for Astronomy, University of Graz/Austria

Abstract

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Periodic Doppler motions inside small fluxtubes are determined from the zero-crossing point of the circular Zeeman polarization profile (Stokes-V=0). The gas fully participates on the known solar 5min oscillations without affecting amplitude or frequency. Averaging the oscillations, the gas is at rest in an absolute solar scale. Discrepancies with formerly observed redshifts are explained by the systematic westward displacement of the magnetic structure relative to the Ca+K bright point used for guiding.

Type
Session III: Theory
Information
International Astronomical Union Colloquium , Volume 104 , Issue 2: Solar and Stellar Flares , 1989 , pp. 349 - 352
Copyright
Copyright © Kluwer 1989

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