Solar oscillation ring diagrams and large-scale flows

Details Solar oscillation ring diagrams and large-scale flows Solar oscillation ring diagrams and large-scale flows

Aug 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...343l..69h&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 343, Aug. 15, 1989, p. L69-L71.

Astronomy and Astrophysics

Astrophysics

11

Power Spectra, Solar Activity, Solar Oscillations, Solar Rotation, Atmospheric Circulation, Fourier Transformation, Solar Atmosphere

Scientific paper

A new analysis that results in the appearance of rings in the power spectrum of solar oscillations has been used to detect horizontal flows in two directions on the sun. An analysis of the rings obtained over four different solar longitude ranges suggests the presence of large-scale flows with longitudinal variations of about 20 m/s. The position of these flows are correlated with the location of an active region.

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