| Name: Karan Dogra Affiliation: Aryabhatta Research Institute Of Observational sciences Conference ID: ASI2023_368 Title : Optical variability of blazar 3C 454.3 Authors and Co-Authors : Karan Dogra Alok C. Gupta Abstract Type : Poster Abstract Category : Extragalactic Astronomy Abstract : The poster is about the optical variability of blazar 3C 454.3. We have looked for Intra-day variability, short term variability, colour variations, spectral index and optical SEDs. Variability tests like Nested ANOVA and power enhanced F-test have been employed together with the discrete correlation function analysis, to know if two light curves are correlated or not. We will be further extending the study to multi-wavelength regime, in which we will be looking for the possible presence of QPO's and will try to support either leptonic or hadronic model based upon our study of this source. |