ON 246 and the Stochastic Self-Organized Criticality in C3 ISP Blazars: A Weekly Light Curve Analysis

We present a weekly-cadence light curve analysis of ON 246 (4FGL J1230.2+2517) and three additional C3-class ISP blazars identified in our prior work as an anomalously variable subpopulation irreducible to standard observational biases. Using Fermi-LAT data accessed via the Light Curve Repository (LCR), we characterize the temporal structure of flux variability in this extreme group. ON 246 exhibits a max/min flux ratio of 72.6×, a variability coefficient (CV) of 1.070, and a skewness of 3.57 — consistent with a system that dwells in a low-flux baseline state punctuated by rare, high-amplitude flaring events. Autocorrelation analysis reveals significant positive correlation at lags of 1–10 weeks, indicating that flares are not instantaneous but carry temporal memory: rapid rise, slow decay