Velocity oscillations in solar magnetic-field regions

Details Velocity oscillations in solar magnetic-field regions Velocity oscillations in solar magnetic-field regions

Jun 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986s%26w....25..316w&link_type=abstract

Sterne und Weltraum (ISSN 0039-1263), vol. 25, June 1986, p. 316-320. In German.

Physics

Solar Activity, Solar Magnetic Field, Solar Oscillations, Solar Spectra, Calcium, H Alpha Line, K Lines, Power Spectra, Solar Velocity, Sunspots, Zeeman Effect

Scientific paper

Solar activity observed in the H-alpha and Ca(+) K lines are analyzed. Zeeman profiles are studied in order to evaluate the velocity oscillations in the magnetic field; 5-minute oscillations were detected. The penumbra and umbra intensities and a power spectrum reveal the presence of oscillations in the center of sunspots. The possibility of oscillations in the fields of prominences is investigated. Spectra displaying the magnetic-field oscillations are provided.

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