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The solar chromosphere as seen in high-resolution millimeter observations

Published online by Cambridge University Press:  14 March 2005

M.A. Loukitcheva ,
S.K. Solanki  and
S. White
M.A. Loukitcheva
Affiliation:
Astronomical Institute, Saint-Petersburg State University, St. Petersburg, Russia, email: [email protected] Max-Planck-Institut für Sonnensystemforschung, Katlenburg-Lindau, Germany
S.K. Solanki
Affiliation:
Max-Planck-Institut für Sonnensystemforschung, Katlenburg-Lindau, Germany
S. White
Affiliation:
Astronomy Department, University of Maryland, College Park, USA
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Abstract

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We report on chromospheric oscillations studied with 15 sec cadence observations obtained at a wavelength of 3.5 mm with the Berkeley-Illinois-Maryland Array (BIMA). Different solar structures, including active and quiet-Sun regions, are analyzed. We compare the high-resolution millimeter 2-D images with Ca II K line images from Big Bear Solar Observatory. Using Fourier and wavelet time series analysis techniques we find signatures of intensity oscillations with periods in the range of 2-7 minutes. We discuss the results in the context of the dynamical model of the solar atmosphere by Carlsson & Stein (1995, 1997).To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2004 , Issue IAUS223 , June 2004 , pp. 643 - 644
Copyright
© 2004 International Astronomical Union