Photometric Observations of Flares on AD Leo from GWAC-F30 and TESS

We observed active M dwarf star AD Leo for 146 hr in photometry by GWAC-F30 and also analyzed 528-hr photometric data of the from TESS. A total 9 70 flares are detected TESS, respectively. Flare durations, amplitudes energies calculated. The distributions three properties FFDs given. Within same energy range flares, obtained this research previous study basically consistent, which suggests that magnetic activity has not significantly changed compared to decades ago. Comparing with average FFD M-type stars, Leo's is twice higher, indicating its more than level M-type. Based on TESS light curve, rotation period calculated as 2.21${+0.01 \choose -0.01}$ day , supporting result given research. During decay phase most energetic flare we identified QPPs determined a 26.5-min oscillation period, currently longest Leo, suggesting long periodic physical process existed during star.