Abstract
We studied the process of energy release of the confined X2.2 flare, which occurred September 6, 2017 in the active region NOAA 12673. The magnetic reconnection rate and reconnection fluxes were obtained from chromospheric data (SDO/AIA 1600 Å) and magnetograms of the photospheric field (SDO/HMI). The time profiles of the magnetic reconnection rate and microwave emission obtained by the radioastronomical diagnostic complex of solar activity of the Crimean Astrophysical Observatory, Russian Academy of Sciences (KRIM) demonstrate good agreement. This suggests that the magnetic reconnection rate plays an important part in the energy release in flares and in the acceleration of nonthermal electrons with formation of microwave emission. The morphology of the flare radio source in low-frequency emission has been studied. The low-frequency slope of the flux density spectrum is 1.2, which indicates a spatial inhomogeneity of the source. The area of such a source increases with a decrease in frequency.
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5. ACKNOWLEDGMENTS
SDO is a project of NASA’s Living With a Star Program. The SDO/AIA and SDO/HMI data were presented by the Joint Science Operation Center (JSOC). We are grateful for the free access to Air Force RSTN network data.
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Translated by A. Nikol’skii
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Gopasyuk, O.S., Volvach, A.E. & Yakubovskaya, I.V. Magnetic Reconnection Rates in a Confined X Class Flare. Geomagn. Aeron. 62, 888–894 (2022). https://doi.org/10.1134/S0016793222070106
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DOI: https://doi.org/10.1134/S0016793222070106