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Two modes of propagating waves in sunspots

Published online by Cambridge University Press:  01 September 2007

D. Y. Kolobov  and
N. I. Kobanov
D. Y. Kolobov
Affiliation:
Institute of Solar-Terrestrial Physics, P.O. Box 291, 664033, Irkutsk, Russia email: kolobov@iszf.irk.ru
N. I. Kobanov
Affiliation:
Institute of Solar-Terrestrial Physics, P.O. Box 291, 664033, Irkutsk, Russia email: kolobov@iszf.irk.ru
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Abstract

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The observations of sunspot chromosphere are presented. The authors suggest the existence of two modes of propagating waves at the chromospheric level. The connection between these modes and magnetic field topology can be inferred from the analysis of mode propagation velocity and spatial localization. Two hypotheses are tested to explain the phenomenon: “Visual pattern” and “Trans-sunspot wave”.

Keywords

Sun: sunspotsSun: oscillationsSun: chromosphereSun: photosphere
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S247: Waves & Oscillations in the Solar Atmosphere: Heating and Magneto-Seismology , September 2007 , pp. 105 - 109
Copyright
Copyright © International Astronomical Union 2008

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