EDP Sciences
Free access
Volume 444, Number 1, December II 2005
Page(s) 257 - 264
Section The Sun
DOI http://dx.doi.org/10.1051/0004-6361:20053082

A&A 444, 257-264 (2005)
DOI: 10.1051/0004-6361:20053082

Influence of the 5-min oscillations on solar photospheric layers

I. Quiet region
P. Odert1, A. Hanslmeier1, J. Rybák2, A. Kucera2 and H. Wöhl3

1  Institut für Physik, Institutsbereich Geophysik, Astrophysik und Meteorologie, Universitätsplatz 5, 8010 Graz, Austria
    e-mail: petra_odert@aon.at
2  Astronomical Institute, Slovak Academy of Sciences, 05960 Tatranská Lomnica, Slovakia
3  Kiepenheuer-Institut für Sonnenphysik, Schöneckstrasse 6, 79104 Freiburg, Germany

(Received 17 March 2005 / Accepted 11 July 2005)

Time series of 1D spectrograms are used to study the influence of the 5-min oscillations on intensity and velocity fields of different layers of the quiet solar photosphere. We study the continuum intensity field along with intensity and corresponding velocity patterns of the mid and upper photosphere, obtained from two Fe lines. Oscillations seem to dominate the intensity and velocity fields of the higher atmospheric layers. Our results confirm the fast decay of the granular intensity structure with height. From correlations of temperature structures at three different photospheric levels we conclude that there are rapid changes of the structures in the lower photosphere, which are valid for the duration of the time series, while for the upper levels changes of the stuctures are fainter and show significant periodic character. The velocity pattern, on the other hand, shows a periodic propagation through the photosphere. The tests of the influence of seeing conditions on the data are considered.

Key words: Sun: photosphere -- Sun: granulation -- Sun: oscillations

© ESO 2005