Po Chih Hsu (Department of Atmospheric Science, NCU); Ya Hui Yang (Department of Space Science and Engineering, NCU)
Quasi-periodic pulsation (QPP) is believed to be associated with solar flares, which can be observed in various frequencies of EM spectrum, such as radio, X-ray and microwave. I used the Chinese Solar Broadband Radio Spectrometers (SBRS) to search for the candidates of flare-related QPPs. The SBRS can measure the solar radio flux with right-hand and left-hand circular polarizations, which is helpful to differentiate the possible causes from these two polarizations. In this study, the 2.6-3.8 GHz data with a time resolution of 8 ms and a spectral resolution of 0.01 GHz are used. The source of QPPs appeared at such radio frequency range is supposed to occur in the solar atmosphere. I analyzed twelve QPP events from 2011 to 2013 by Fast Fourier Transform and wavelet analysis to find the characteristic period and other spectral parameters of QPPs.