Oscillatory processes in prominences

Details Oscillatory processes in prominences Oscillatory processes in prominences

Mar 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984soph...91...93b&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 91, March 1984, p. 93-101.

Physics

58

Solar Oscillations, Solar Prominences, Emission Spectra, H Beta Line, Periodic Variations, Stellar Spectrophotometry

Scientific paper

H-beta observations of ten quiescent solar prominences obtained with the horizontal solar telescope at Sayan Observatory during 1981-1982 are reported. The differential technique of Kobanov (1983) is used to detect line-of-sight velocity oscillations, and the results are presented in tables and graphs. Oscillations with periods from 42 to 82 min, amplitudes greater than 200 m/s, and wavelength 11,000 km are found. Analysis shows them to be monoharmonic and distinct from the sporadic and damped oscillations of the prominence body, and it is suggested that they are the result of the combination of torsional and longitudinal oscillations. No evidence of short-term oscillations is found.

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