New optical reverberation lags in 3C 273 show an accretion disc 2-7 times larger than thin-disc predictions, with extrapolated dusty-disc radii of 100-200 light-days matching the broad-line region.
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Accretion disc reverberation mapping of the quasar 3C 273
New optical reverberation lags in 3C 273 show an accretion disc 2-7 times larger than thin-disc predictions, with extrapolated dusty-disc radii of 100-200 light-days matching the broad-line region.