Latitudinal Variations of Line-of-Sight Velocity Oscillations in the Photosphere, Chromosphere and Prominences

Details Latitudinal Variations of Line-of-Sight Velocity Oscillations in the Photosphere, Chromosphere and Prominences Latitudinal Variations of Line-of-Sight Velocity Oscillations in the Photosphere, Chromosphere and Prominences

Mar 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999soph..185...35m&link_type=abstract

Solar Physics, v. 185, Issue 1, p. 35-40 (1999).

Physics

8

Scientific paper

By studying time variations in line-of-sight velocity in prominences, we found that the velocity oscillations with periods over 40min have a reasonably well-marked dependence of the period length on the heliolatitude. Simultaneous observations of line-of-sight velocities in the photosphere and chromosphere showed that quasi-hourly oscillation periods at these levels of the solar atmosphere and in prominences have a similar latitudinal behaviour. Thus, the photosphere, chromosphere and prominences should be regarded as a unified oscillatory system.

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