Search for Periodic Variability in $\gamma$-ray Blazars Using \textit{Fermi}-LAT

Understand

Blazars are known to exhibit variability across a broad range of timescales.

• This behavior can include periodicity in their $\gamma$-ray emission, whose clear detection remains an ongoing challenge, partly due to the inherent stochasticity of the processes involved and also the lack of adequately well-sampled light curves.
• In this study, we perform a systematic search for periodicity in a selected sample of 24 $\gamma$-ray blazars using twelve years of Fermi-LAT data.
• The sample comprises the most promising candidates selected from a previous study, extending the light curves by three additional years, expanding the analyzed energy range from $>$1~GeV to $>$0.1~GeV to improve photon statistics, and enhancing the time-series analysis methodology.