Modeling Quasar Variability With Simulations of Mass Accretion Rate Perturbations

The physical characteritics of quasars that contribute to variability in quasar emissions are poorly understood. In this project, we developed simulations that generate light curves using a DRW model of accretion rate. Our objective is to characterize parameters that have an effect on observed variability. The simulations track random perturbations in the mass accretion rate as they propagate across local regions of the disk. The accretion rate is then used to calculate the wavelength dependent amplitude of variability and the PSD. Using the simulation results, we will make comparisons to data analyzed from Stripe 82 of the SDSS which will provide a means to test different physical parameters. The Vera Rubin Observatory, or LSST, is an upcoming observatory that will provide a large set of AGN observations over a period of ten years. Our goal is to compare simulation results to synthetic LSST data to make predictions for future LSST observations.