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Interplanetary scintillations of the radio source ensemble at the maximum of cycle 24 of solar activity

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Abstract

The results of the interplanetary scintillation observations performed in the period of the maximum of solar activity from April 2013 to April 2014 on the BSA LPI radio telescope at the frequency 111MHz are presented. Fluctuations of the radio emission flux were recorded round the clock for all sources with a scintillating flux of more than 0.2 Jy falling in a strip of sky with a width of 50° over declinations corresponding to a 96-beam directional pattern of the radio telescope. The total number of sources observed during the day reaches 5000. The processing of the observational data was carried out on the assumption that a set of scintillating sources represents a homogeneous statistical ensemble. Daily two-dimensional maps of the distribution of the level of scintillations, whose analysis shows the strong nonstationarity and large-scale irregularity of the spatial distribution of solar wind parameters, were constructed. According to maps of the distribution of the level of scintillations averaged over monthly intervals, the global structure of the distribution of the solar wind was investigated in the period of the maximum of solar activity, which was found to be on the average close to spherically symmetric. The data show that on a spherically symmetric background an east–west asymmetry is observed, which indicates the presence of a large-scale structure of a spiral type in the solar wind.

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References

  1. Hewish, A., Scott, P.E., and Wills, D., Interplanetary scintillation of small diameter radio sources, Nature, 1964, vol. 203, no. 9, pp. 1214–1217.

    Article  ADS  Google Scholar 

  2. Vlasov, V.I., Chashei, I.V., Shishov, V.I., and Shishova, T.D., Interplanetary plasma according to radioastronomy data, Geomagn. Aeron., 1979, vol. 19, no. 3, pp. 401–424.

    ADS  Google Scholar 

  3. Glubokova, S.K., Glyantsev, A.V., Tyul’bashev, S.A., et al., Interplanetary scintillations of strong radio sources in the descending phase near the cycle 23 minimum, Geomagn. Aeron. (Engl. Transl.), 2011, vol. 51, no. 6, pp. 794–799.

    Article  ADS  Google Scholar 

  4. Shishov, V.I., Tyul’bashev, S.A., Subaev, I.A., and Chashei, I.V., Monitoring of interplanetary and ionospheric scintillation of a radio source ensemble, Astron. Vestn., 2008, vol. 42, no. 4, pp. 363–372.

    Google Scholar 

  5. Shishov, V.I., Tyul’bashev, S.A., Chashei, I.V., et al., Interplanetary and ionosphere scintillation monitoring of radio sources ensemble at the solar activity minimum, Sol. Phys., 2010, vol. 265, pp. 277–291.

    Article  ADS  Google Scholar 

  6. Chashei, I.V., Shishov, V.I., Tyul’bashev, S.A., et al., Results of IPS observations in the period near solar activity minimum, Sol. Phys., 2013, vol. 285, pp. 141–149.

    Article  ADS  Google Scholar 

  7. Chashei, I.V., Shishov, V.I., Tyul’bashev, S.A., et al., Interplanetary scintillations of an ensemble of radio sources during the solar activity minimum of cycles 23/24, Cosmic Res., 2013, vol. 51, no. 1, pp. 23–28.

    Article  ADS  Google Scholar 

  8. Manoharan, P.K., Three-dimensional evolution of solar wind during solar cycles 22–24, Astrophys. J., 2012, vol. 751, no. 2, p. 128.

    Article  ADS  Google Scholar 

  9. Tokumaru, M., Kojima, M., and Fujiki, K., Long-term evolution in the global distribution of solar wind speed and density fluctuations during 1997–2009, J. Geophys. Res., 2012, vol. 117, no. A6, A06108.

    Article  ADS  Google Scholar 

  10. Glubokova, S.K., Glyantsev, A.V., Tyul’bashev, S.A., et al., Parameters of the turbulence of the interplanetary plasma derived from scintillation observations of the quasars 3C 48 and 3C 298 at the solar-activity maximum, Astron. Rep., 2015, vol. 92, no. 1, pp. 33–39.

    Article  ADS  Google Scholar 

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Authors and Affiliations

  1. Lebedev Physical Institute, Russian Academy of Sciences, Pushchino Radio Astronomy Observatory, Moscow oblast, 142290, Russia

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

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

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Original Russian Text © I.V. Chashei, V.I. Shishov, S.A. Tyul’bashev, I.A. Subaev, 2016, published in Kosmicheskie Issledovaniya, 2016, Vol. 54, No. 3, pp. 188–194.

The article is based on material presented at the 10th conference ISR RAS “Plasma Physics in the Solar System” (February 2015).

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Chashei, I.V., Shishov, V.I., Tyul’bashev, S.A. et al. Interplanetary scintillations of the radio source ensemble at the maximum of cycle 24 of solar activity. Cosmic Res 54, 178–184 (2016). https://doi.org/10.1134/S0010952516010032

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  • DOI: https://doi.org/10.1134/S0010952516010032

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