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The helioseismological CORONAS-F DIFOS experiment

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Abstract

The CORONAS-F DIFOS experiment continues the CORONAS-I studies started in 1994, devoted to investigations of solar global oscillations. CORONAS-F was launched July 31, 2001. Variations in the intensity of the solar radiation are measured in the six spectral intervals of the multi-channel photometer: 350, 500, 650, 850, 1100, and 1500 nm, with the bandwidths being about 10% of the central wavelength of each interval. The scientific goals of the experiment, a brief description of the instrument, and observational conditions are presented, as well as the data processing techniques. The first observations of the low-order p eigenmodes of the solar oscillations are presented for various wavelength ranges. A decrease in the relative amplitudes with observing wavelength is indicated. The amplitude ratios for various spectral ranges agree well with those detected earlier in ground-and space-based experiments.

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Authors and Affiliations

  1. Institute of Terrestrial Magnetism, the Ionosphere, and Radio Wave Propagation, Troitsk, Russia

    N. I. Lebedev, V. D. Kuznetsov & V. N. Oraevskii

  2. Astrophysical Institute, Potsdam, Germany

    J. Staude

  3. Main Astronomical Observatory, Kiev, Ukraine

    R. I. Kostyk

Authors
  1. N. I. Lebedev
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  2. V. D. Kuznetsov
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  3. V. N. Oraevskii
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  4. J. Staude
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  5. R. I. Kostyk
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Translated from Astronomicheski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Zhurnal, Vol. 81, No. 10, 2004, pp. 956–960.

Original Russian Text Copyright © 2004 by Lebedev, Kuznetsov, Oraevski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \), Staude, Kostyk.

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Lebedev, N.I., Kuznetsov, V.D., Oraevskii, V.N. et al. The helioseismological CORONAS-F DIFOS experiment. Astron. Rep. 48, 871–875 (2004). https://doi.org/10.1134/1.1809399

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  • DOI: https://doi.org/10.1134/1.1809399

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