Optical monitoring of the z = 4 . 40 quasar Q 2203 + 292

Abstract

We report Cousins R-band monitoring of the high-redshift (z=4.40) radio quiet quasar Q2203+292 from May 1999 to October 2007. The quasar shows maximum peak-topeak light curve amplitude of ∼0.3 mag during the time of our monitoring, and ∼0.9 mag when combined with older literature data. The rms of a fit to the light curve with a constant is 0.08 mag and 0.2… (More)

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