Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...246..587m&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 246, no. 2, June 1991, p. 587-596.
Astronomy and Astrophysics
Astrophysics
1
Chromosphere, Solar Atmosphere, Solar Magnetic Field, Solar Oscillations, Coronal Loops, H Alpha Line, Low Frequencies, Solar Prominences, Solar Spectra, Solar X-Rays
Scientific paper
Results of two-day observations (July 7 and 8, 1988) of low frequency observations in the chromosphere in the wings of the H-alpha line are summarized. The observed low-frequency oscillations have periods of 96, 66, 46, 38, 32, 28, 25, and 21 min. The wavelengths of the oscillations are 600-700 Mm, comparable with the scale of the background magnetic field in the direction parallel to the equator. The amplitude of the low-frequency observations is substantially enhanced in the region of filaments.
Merkulenko V. E.
Poliakov V. I.
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