Looking for the cause of the quasi-periodic pulsations in solar flares

Żaneta Szaforz and Michał Tomczak

We investigated quasi-periodic pulsations (QPPs) of a solar flare that occurred on 28 May 2011. The X-ray lightcurves of RHESSI and GOES satellites revealed a period of oscillations of about 5.5 min. Attempts to explain these oscillations by using the commonly acknowledged MHD models come to the end without any success. We suggest that the observed QPPs can be caused by the external modulation of the reconnection process with the new emerging magnetic flux.

Proceedings of the Polish Astronomical Society, vol. 7, 135-137 (2018)

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