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Solar Wind from Maximum to Minimum for Cycle 24 in Interplanetary Scintillation Monitoring Data

Astronomy Reports volume 66, pages 42–47 (2022)Cite this article

Abstract

A comparison is made of the data from the annual series of interplanetary scintillation monitoring performed at the maximum (2015) and minimum (2019) of solar activity. The observations were carried out with the LPA LPI radio telescope at the frequency 111 MHz. We showed that the time-of-day dependences of the scintillation level averaged over monthly intervals for the summer months at the minimum and maximum are approximately the same. For the winter months, at the decay phase and at the minimum of activity, an annual periodicity in the scintillation level is observed; at the maximum of activity, there is no periodicity. The results obtained can be explained by a combination of the cyclic dynamics of the global structure of the solar wind and the change in the location of the solar wind regions probed in the experiment during the year.

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Authors and Affiliations

  1. Lebedev Physical Institute, Russian Academy of Sciences, 119991, Moscow, Russia

    I. V. Chashei, S. A. Tyul’bashev & I. A. Subaev

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  1. I. V. Chashei
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  2. S. A. Tyul’bashev
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  3. I. A. Subaev
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Correspondence to I. V. Chashei.

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Translated by E. Seifina

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Chashei, I.V., Tyul’bashev, S.A. & Subaev, I.A. Solar Wind from Maximum to Minimum for Cycle 24 in Interplanetary Scintillation Monitoring Data. Astron. Rep. 66, 42–47 (2022). https://doi.org/10.1134/S1063772922010036

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  • DOI: https://doi.org/10.1134/S1063772922010036

Keywords:

  • solar wind
  • global structure
  • interplanetary scintillations