DIFFERENT MODES OF TURBULENCE IN THE ACTIVE REGIONS OF THE SOLAR PHOTOSPHERE

Автор(и)

  • L. V. Kozak Kyiv National Taras Shevchenko Universit, Ukraine
  • R. I. Kostyk Main Astronomical Observatory of the National Academy of Sciences of Ukraine, Ukraine
  • O. K. Cheremnykh Space Research Institute of the National Academy of Sciences of Ukraine and State Space Agency of Ukraine, Ukraine

DOI:

https://doi.org/10.18524/1810-4215.2013.26.83840

Ключові слова:

solar photosphere, turbulent processes in the sun photosphere, turbulent model, self-organizing magnetic plasma structures, mesogranulation

Анотація

In work the range of different methods for the analysis of characteristics of turbulent processes in the active regions of the solar photosphere has been used. The changes of fluctuations distribution function and its moments were analyzed, spectral analysis was carried out.

It was found out from the observations of active region carried out with the 70-cm vacuum tower telescope VTT in Isanie (Tenerife Island,Spain) that the turbulent proc­esses in the sun photosphere are characterized by two dif­ferent spectra of turbulence. The first one of them is well known Kolmohorov spectrum, which describes the plasma with zero mean magnetic field. The second one is the Kraichnan spectrum with a different from zero mean magnetic field. Transition from one spectrum type to an­other one occurs at scale of3 Mm.

We have to note that the scale3 Mmcorresponds to one of mesogranulation and testifies about non-zero mean magnetic fields for the consideration of regions exceeding the granulation in active regions of the photosphere. Be­sides, this clears the possibility of appearance of self­organizing magnetic plasma structures such as spots, ac­tive regions and complexes of activity.

Посилання

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Опубліковано

2013-11-19

Номер

Том 26 № 2 (2013)

Розділ

Статті

Ліцензія

Авторське право (c) 2016 Odessa Astronomical Publications

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Відповідно Закону України про авторське право і суміжні права N 3792-XII від 23 грудня 1993 року