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Latitudinal Variations of Line-of-Sight Velocity Oscillations in the Photosphere, Chromosphere and Prominences

Published online by Cambridge University Press:  12 April 2016

G.P. Mashnich  and
V.S. Bashkirtsev
G.P. Mashnich
Affiliation:
Institute of Solar-Terrestrial Physics, Irkutsk, P. O. Box 4026, Russia
V.S. Bashkirtsev
Affiliation:
Institute of Solar-Terrestrial Physics, Irkutsk, P. O. Box 4026, Russia

Abstract

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By studying line-of-sight velocity time variations in prominences, we found that velocity oscillations with a period over 40 min have a reasonably well-marked dependence of the period length with heliolatitude. Simultaneous observations of line-of-sight velocities in the photosphere and chromosphere showed that quasi-hourly oscillation periods at these levels in the solar atmosphere and in prominences have a similar latitudinal behavior.

Type
Filaments and Their Environment
Information
International Astronomical Union Colloquium , Volume 167: New Perspectives on Solar Prominences , 1998 , pp. 131 - 134
Copyright
Copyright © Astronomical Society of the Pacific 1998

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