Observations of global oscillations of the sun in the SOKOL experiment onboard the CORONAS-PHOTON satellite

The helioseismological experiment onboard the CORONAS-PHOTON satellite is intended for the study of characteristics and the internal structure of the Sun using the solar eigenmodes spectrum obtained by the measurement of fluctuations of the solar radiation intensity. This experiment is the continuat...

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Bibliographic Details
Published in:Solar system research 2011-06, Vol.45 (3), p.200-205
Main Authors: Lebedev, N. I., Kuznetsov, V. D., Zhugzhda, Yu. D., Boldyrev, S. I.
Format: Article
Language:English
Subjects:
Artificial satellites
Astronomy
Astrophysics and Astroparticles
Astrophysics and Cosmology
Fluctuation
Fluctuations
Observations and Techniques
Onboard
Oscillations
Photometers
Physics
Physics and Astronomy
Planetology
Satellites
Solar physics
Solar radiation
Spectra
Spectrum analysis
Sun
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Summary:The helioseismological experiment onboard the CORONAS-PHOTON satellite is intended for the study of characteristics and the internal structure of the Sun using the solar eigenmodes spectrum obtained by the measurement of fluctuations of the solar radiation intensity. This experiment is the continuation of investigations of solar global oscillations started onboard artificial satellites CORONAS-I and CORONAS-F. Measurements of fluctuations of the solar radiation intensity in seven optical ranges—from the near ultraviolet to infrared spectral regions—are carried out by the solar photometer SOKOL (SOlnechnye KOLebaniya (Solar Oscillations)) developed at IZMIRAN. Over an instrument operation period of more than 9 months, a large volume of the scientific information (more than 500 MB) has been obtained. The primary processing of obtained data was performed, and spectra of fluctuations of the solar radiation intensity were constructed. On the basis of part of the processed information obtained by the photometer SOKOL, and data of the experiment DIFOS (Differential Oscillations of the Sun) onboard the artificial satellite CORONAS-F, the dependence of the relative amplitude of oscillations on the wavelength of the observation was determined.
ISSN:0038-0946
1608-3423
DOI:10.1134/S0038094611020134