Observations of Global Oscillations of The Sun In A Wide Optical Spectral Range: Experiment Difos Onboard Coronas-f
Abstract
The DIFOS experiment, which uses a multychannel photometer aboard the CORONAS-F satellite, has been designed to observe the irradiance fluctuations due to global solar oscillations in six optical spectral ranges: near 350, 500, 650, 850, 1100, and 1500 nm with a bandwidth of about 10% of the central wave length for each. CORONAS-F was launched on July 31, 2001. We present the first, preliminary results of observations of the low-degree p-modes of global oscillations for different observational optical ranges. It was found that the oscillation amplitudes decreased with the growth of the wave length of observations. The amplitude ratios for different wave lengths are in a good agreement with the earlier groundbased observations and theoretical predictions.
- Publication:
-
EGS General Assembly Conference Abstracts
- Pub Date:
- 2002
- Bibcode:
- 2002EGSGA..27.1001O