Correlation of near-Earth proton enhancements >100 MeV with parameters of solar microwave bursts

Victor Grechnev; Valentin Kiselev; Nataliya Meshalkina; Ilya Chertok

doi:10.12737/stp-33201701

UDC 52

CORRELATION OF NEAR-EARTH PROTON ENHANCEMENTS >100 MEV WITH PARAMETERS OF SOLAR MICROWAVE BURSTS Correlation of near-Earth proton enhancements >100 MeV with parameters of solar microwave bursts

АА Аа

Published in Solar-Terrestrial Physics · Volume 3, Issue 3 · Pages 3–12 · Rubric: Results of current research

DOI: https://doi.org/10.12737/stp-33201701

Received: 09.10.2017 Accepted: 16.03.2026 Language of publication: RUS

Authors

Victor Grechnev

ORCID

Valentin Kiselev

Nataliya Meshalkina

ORCID

Ilya Chertok

Victor Grechnev

Academic degree: doctor of physical and mathematical sciences

Institute of Solar-Terrestrial Physics SB RAS Russian Federation · Irkutsk

ORCID

Valentin Kiselev

Institute of Solar Terrestrial Physics SB RAS Russian Federation · Irkutsk

Nataliya Meshalkina

Academic degree: candidate of physical and mathematical sciences

Institute of Solar Terrestrial Physics SB RAS Russian Federation · Irkutsk

ORCID

Ilya Chertok

Academic degree: candidate of physical and mathematical sciences

Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation RAS Russian Federation · Troitsk, Moscow

ABSTRACT

We analyze the relations between various combinations of peak fluxes and fluences of solar microwave bursts at 35 GHz recorded with the Nobeyama Radio Polarimeters during 1990–2015, and corresponding parameters of proton enhancements with E>100 MeV exceeding 0.1 pfu registered by GOES monitors in near-Earth environment. The highest correlation has been found between the microwave and proton fluences. This fact reflects a dependence of the total number of protons on the total duration of the acceleration process. In the events with strong flares, the correlation coefficients of proton fluences with microwave and soft X-ray fluences are higher than those with speeds of coronal mass ejections. The results indicate a statistically larger contribution of flare processes to acceleration of high-energy protons. Acceleration by shock waves seems to be less important at high energies in events associated with strong flares, although its contribution probably prevails in weaker events. The probability of a detectable proton enhancement was found to directly depend on the peak flux and duration of a microwave burst. This can be used for diagnostics of proton enhancements based on microwave observations.

KEYWORDS

proton events, flares, radio radiation

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Grechnev V. V., Kiselev V. I., Meshalkina N. S., Chertok I. M. Correlation of near-Earth proton enhancements >100 MeV with parameters of solar microwave bursts // Solar-Terrestrial Physics. 2017. no. 3. pp. 3-12. DOI: https://doi.org/10.12737/stp-33201701. (Date of access 20.10.2026).

MLA

Victor Grechnev, Kiselev V. I., Meshalkina N. S., Chertok I. M.. "Correlation of near-Earth proton enhancements >100 MeV with parameters of solar microwave bursts." Solar-Terrestrial Physics 3.3 (2017): 3-12. DOI: https://doi.org/10.12737/stp-33201701.

APA

Grechnev V. V., Kiselev V. I., Meshalkina N. S., Chertok I. M. (2017). Correlation of near-Earth proton enhancements >100 MeV with parameters of solar microwave bursts. Solar-Terrestrial Physics, 3(3), 3-12. https://doi.org/10.12737/stp-33201701

Chicago

Victor Grechnev, Kiselev V. I., Meshalkina N. S., Chertok I. M.. "Correlation of near-Earth proton enhancements >100 MeV with parameters of solar microwave bursts." Solar-Terrestrial Physics 3, no. 3 (2017): 3-12. https://doi.org/10.12737/stp-33201701.

WIKI

{{cite journal | author = Grechnev V. V., Kiselev V. I., Meshalkina N. S., Chertok I. M. | title = Correlation of near-Earth proton enhancements >100 MeV with parameters of solar microwave bursts | journal = Solar-Terrestrial Physics | year = 2017 | volume = 3 | issue = 3 | pages = 3-12 | doi = 10.12737/stp-33201701 }}

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CORRELATION OF NEAR-EARTH PROTON ENHANCEMENTS >100 MEV WITH PARAMETERS OF SOLAR MICROWAVE BURSTS Correlation of near-Earth proton enhancements >100 MeV with parameters of solar microwave bursts

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