High-Cadence B-Band Search for Optical Flares on BY Dra

摘要

The high-cadence search at 50 and 100 samples/sec of BY Dra revealed very short-duration B-band flares. A statistical criterion was used to isolate the short-duration optical flares from random photon events. Three flares, ranging in duration from 60 to 130 ms, with peaks 0.30-0.43 magnitude above the mean, were detected within the 80.2 hours of periodic monitoring from July 2012 through October 2015. This represents a flare rate of 0.04 flares/hour.