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On the temporal variation of the solar continuous brightness fluctuations

✍ Scribed by B. Hadjebi

Publisher
Springer
Year
1981
Tongue
English
Weight
723 KB
Volume
73
Category
Article
ISSN
0038-0938

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✦ Synopsis

From a sequence of white-light photographs of solar granulation at the centre of the disk, obtained by Spectro-Stratoscope on May 17, 1975, two-dimensional spatial power spectra of photospheric intensity fluctuations were deduced. These show periodicities of ~1000 s, 250--450 s (5-min oscillation), and shorter ones in the range 30-120 s. The reality of the shorter periods, however, seems to be questionable.

The weighted mean wavenumber of the spatial power spectra and rms of the intensity fluctuation (/~ms) are also computed, showing the same periodicities as the power.

* Mitteilungen aus dem Kiepenheuer-lnstitut Nr. 188.

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