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Concerning five-minute variations of the global magnetic field of the Sun

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Abstract

For the purpose of identifying five-min oscillations we analyze long-term continuous observations of the solar magnetic field (with a duration from 3 to 11 hours) with 0.5 D ⊙ spatial resolution obtained with the STOP telescope (Solar Telescope for Operative Predictions) at the Sayan observatory in 1987 and 1989. It is shown that global magnetic field fluctuations with such periods seem to be real, but the character of corresponding power spectra is strongly dependent on the mean field strength in the magnetograph aperture.

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Authors and Affiliations

  1. Siberian Branch, Siberian Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation, USSR Academy of Sciences, Irkutsk 33, 664033, U.S.S.R.

    V. M. Grigoryev & M. L. Demidov

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  1. V. M. Grigoryev
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  2. M. L. Demidov
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Grigoryev, V.M., Demidov, M.L. Concerning five-minute variations of the global magnetic field of the Sun. Sol Phys 133, 103–110 (1991). https://doi.org/10.1007/BF00149830

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  • DOI: https://doi.org/10.1007/BF00149830

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