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2 results

  • On spatial variations of magnetic field and superthermal electron distribution in cm-radio burst source

  • Leonid V. Yasnov, Marian Karlický
  • Journal:
    Proceedings of the International Astronomical Union / Volume 4 / Issue S257 / September 2008
    Published online by Cambridge University Press:
    01 September 2008, pp. 353-356
    Print publication:
    September 2008
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  • The paper presents a new method of an estimation of spatial variations of the magnetic field and superthermal electron distribution in solar cm-radio burst sources. The method is based on the analysis of several burst spectra recorded in the different moments of time and on the minimization of the difference between the theoretical and observed radio fluxes. It is found that the measure of the spatial variations of superthermal electron distribution in the radio source is always greater than that for the magnetic field. In most cases this measure has a minimum at the impulsive phase of cm-radio bursts.

  • Magnetic field in active regions of the sun at coronal heights

  • V. M. Bogod, L. V. Yasnov
  • Journal:
    Proceedings of the International Astronomical Union / Volume 4 / Issue S257 / September 2008
    Published online by Cambridge University Press:
    01 September 2008, pp. 349-352
    Print publication:
    September 2008
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  • A method is developed for estimation of the vertical structure of the magnetic field in active regions using multi-wave spectral-polarization measurements of radio waves which gives not only the dependence of magnetic field strength on height but also determines two-dimensional form of a magnetic flux tube, emitted in the microwave range of wavelengths.