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The Large-Sized Telescope prototype (LST-1) of the future Cherenkov Telescope Array (CTA) Observatory is already delivering results. In July 2021, LST-1 reported the detection of very-high-energy (VHE) gamma rays from the jetted active galactic nuclei BL Lacertae (BL Lac). Since its first detection at VHEs in 1998, several rapid gamma-ray flares with a shorter halving time of 30 minutes have been reported by different ground-based Imaging Atmospheric Cherenkov Telescopes. In this contribution, we present a study on the capabilities of LST-1 to probe the rapid variability emission of fast gamma-ray flares produced by BL Lac. We make use of a dedicated algorithm developed for transient VHE sources to retrieve the minimum time-binning in the source light curve for the source to be detected above a given statistical significance level, depending on the spectral properties displayed during the transient event.
LST, Transient phenomena, methods: statistical, CTA, Gamma rays, Cherenkov telescopes, methods: data analysis
LST, Transient phenomena, methods: statistical, CTA, Gamma rays, Cherenkov telescopes, methods: data analysis
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