CA I 6162 A line oscillations observed in a solar active region

Details CA I 6162 A line oscillations observed in a solar active region CA I 6162 A line oscillations observed in a solar active region

Feb 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...228..517a&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 228, no. 2, Feb. 1990, p. 517-521. Research supported by the Universita di Fir

Astronomy and Astrophysics

Astrophysics

7

Calcium, Solar Atmosphere, Solar Magnetic Field, Solar Oscillations, Solar Spectra, Line Spectra, Power Spectra, Solar Activity, Visible Spectrum

Scientific paper

The effect of the magnetic field on the high degree p-modes in the solar atmosphere is still controversial, both from the theoretical and the experimental point of view. The temporal behavior of the 6162 A Ca I line profile in an active region has been observed with the spectrointerferometer of the Arcetri solar tower. It is found that the presence of magnetic field suppresses several modes of oscillation and that the line oscillates almost 'rigidly'.

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