Fig. 6
Maximum-likelihood rest-frame parameters τ0 and
of the
OU process for all 6304 Stripe 82 QSO lightcurves. Black dots represent QSO
lightcurves that are best described by an OU process, whereas red triangles
represent those where the OU process is not the best description.
Orange squares represent 100 MACHO QSO lightcurves from Kelly et al. (2009).
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