The chromospheric brightness oscillation spectrum from filter observations in the H-beta-line

Details The chromospheric brightness oscillation spectrum from filter observations in the H-beta-line The chromospheric brightness oscillation spectrum from filter observations in the H-beta-line

May 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...146l...9m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 146, no. 1, May 1985, p. L9, L10.

Astronomy and Astrophysics

Astrophysics

3

Chromosphere, H Beta Line, Solar Oscillations, Brightness, Fast Fourier Transformations, Filtergrams, Maximum Entropy Method, Power Spectra, Solar Spectra

Scientific paper

Using filtergrams taken in the wing of the H-beta-line, a spectrum of brightness oscillations has been detected in the chromosphere near the solar limb. The spectrum clearly shows the following periods: 77, 45, 32, 26, 22, 15, 9.2, and 3.0 minutes. The sequence of these periods is in best agreement with the p-modes of radial pulsation of the sun for the 1968 nonstandard solar model by Rouse (1977). These results should be regarded as preliminary ones, because the observing time of 90 min is insufficient for a confident estimation of periods in the low-frequency part of the spectrum.

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