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Assessment of stochastic and deterministic models of 6304 quasar lightcurves from SDSS Stripe 82

Assessment of stochastic and deterministic models of 6304 quasar lightcurves from SDSS Stripe 82

The optical lightcurves of many quasars show variations of tenths of a magnitude or more on timescales of months to years. This variation often cannot be described well by a simple deterministic model. We perform a Bayesian comparison of over 20 deterministic and stochastic models on 6304 quasi-steller object (QSO) …