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Seismology of Sunspot Atmospheres*

Published online by Cambridge University Press:  12 April 2016

Y.D. Žugžda ,
V. Locāns  and
J. Staude
Y.D. Žugžda
Affiliation:
Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation (IZMIRAN) of the USSR, Academy of Sciences, USSR 142092 Moscow, U.S.S.R.
V. Locāns
Affiliation:
Radioastrophysical Observatory of the Latvian Academy of Sciences, 226524 Riga, U.S.S.R.
J. Staude
Affiliation:
Zentralinstitut für solar-terrestrische Physik, Sonnenobservatorium Einsteinturm, DDR 1500 Potsdam, G.D.R.

Abstract

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The present work deals with the theory of oscillations with periods of about 3 min observed in the chromosphere above sunspot umbrae. The model of these oscillations (slow mode magneto-acoustic waves trapped in a chromospheric resonant cavity) provides an independent method of checking empirical models of the chromosphere above sunspots.

Making use of this method, we investigate sunspot models which have been derived from spectroscopic data; the calculated periods of the oscillations fit well the observed periods.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 66: Problems of Solar and Stellar Oscillations , 1983 , pp. 369 - 378
Copyright
Copyright © Reidel 1983

Footnotes

*

Proceedings of the 66th IAU Colloquium: Problems in Solar and Stellar Oscillations, held at the Crimean Astrophysical Observatory, U.S.S.R., 1-5 September, 1981.

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