Radio imaging of quasi-periodic magnetic reconnection and electron acceleration during a solar flare

Jul 8, 2021, 7:30 PM


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Working Group 2: Particle acceleration Working Group 1: Flare thermal response


Yuankun Kou (Nanjing University)


We analyze a C-class solar flare with the microwave (MW) data from Expanded Owens Valley Solar Array (EOVSA) and the SDO/AIA data. We find that the flare is led by an erupting filament. The interesting result is that the flare produces two MW sources, which lay at loop-top region and the region above that, respectively. Moreover, the brightness temperatures of the two sources, as well as derivative curve of GOES soft X-ray flux, change synchronously with a quasi-period of about 40 seconds. At the peak moments, the spectra of both sources show non-thermal gyrosynchrotron characteristics. The results suggest that quasi-periodic magnetic reconnection accelerates electrons, which then produce quasi-periodic MW radiation near the reconnection region and at the loop-top region.


Primary authors

Yuankun Kou (Nanjing University) Dr Xin Cheng


Sijie Yu (New Jersey Institute of Technology) Bin Chen (New Jersey Institute of Technology) Mingde Ding (Nanjing University)

Presentation materials