Adiabatic spectrum of radio emission of plasma clouds, emitted by the Sun during solar flares, and inhomogeneities of the spectrum of radio emission of clouds

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It is known that so-called solar flares systematically occur in the area of sunspots. They are accompanied by radiation in almost all frequency ranges and sometimes by the emission of hot plasma. Observations on the RATAN-600 radio telescope have shown that the radio emission spectrum of plasma clouds heated to values of the order of 106 K erupted from the solar flare region turned out to be adiabatic. The high correlation of the inhomogeneities of the radio emission spectra of active formation over a group of sunspots indicates the stable presence of recombination radio lines in the radiation of active formation. However, the radio emission spectra of hot plasma clouds ejected from the region of solar flares occurring in this group of spots do not show any correlation.

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作者简介

А. Dravskikh

Special Astrophysical Observatory of the Russian Academy of Sciences

编辑信件的主要联系方式.
Email: dedalfed@mail.ru

St. Petersburg Branch

俄罗斯联邦, St. Petersburg

Yu. Dravskikh

Special Astrophysical Observatory of the Russian Academy of Sciences

Email: dedalfed@mail.ru

St. Petersburg Branch

俄罗斯联邦, St. Petersburg

参考

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2. Fig. 1. Sunspot groups of 06.09.2017 and the corresponding AO. Group 12673 is highlighted.

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3. Fig. 2. Scan of the Sun on the RAAN-600 radio telescope at azimuth 0° for 06.09.2017.

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4. Fig. 3. Changes in the intensity at the maximum of the spectrum of AO12673 according to RT observations at azimuth 0° for the entire period of AO’s stay on the visible side of the Sun from August 30 to September 9, 2017.

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5. Fig. 4. Spectra at the emission maxima of AO 12673 during solar observations on September 6, 2017 at azimuths of –24°, –12°, 0°, +12°, +24°.

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6. Fig. 5. Radio emission intensity AO12673 09/07/2017 in azimuths.

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7. Fig. 6. Radio emission intensity AO12673 09/08/2017 in azimuths.

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8. Fig. 7. Radio emission spectra of AO12673 for September 6, 2017 in azimuths of –12° and +12°, approximated by 5th degree polynomials. Polynomials and approximation reliability values ​​R2 are given.

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9. Fig. 8. Inhomogeneities of the radio emission spectra of AO12673 for September 6, 2017 in azimuths of –12° and +12°. Their correlation coefficient is 0.92.

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10. Fig. 9. Inhomogeneities of the radio emission spectra of the cloud and AO for September 6, 2017 at an azimuth of –12° as a percentage of the intensities of the cloud and AO.

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11. Fig. 10. Spectra at the emission maxima of AO 12673 during solar observations on September 7, 2017, at azimuths from –30° to +30°.

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12. Fig. 11. Inhomogeneities of the radio emission spectra of coronal plasma clouds ejected from solar flare regions on September 6 and 7, 2017, as a percentage of the cloud emission intensities, their CC = –0.01982, their intensities are equal to 7.58684 and 22.86702%, respectively.

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