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We present results from a new optical/UV/X-ray monitoring campaign of theluminous Seyfert galaxy Fairall 9 using the Swift satellite. Using theUV-Optical Telescope (UVOT) on Swift, we find correlated optical/UV variabilityon all time scales ranging from the sampling time (4-days) to the length of thecampaign (2.5 months). In one noteworthy event, the UW2-band flux dips by 20%in 4-days, and then recovers equally quickly; this event is not seen in eitherthe optical or the X-ray bands. We argue that this event provides furtherevidence that a significant fraction of the UV-emission must be driven byirradiation/reprocessing of emission from the central disk. We also use anarchival XMM-Newton observation to examine shorter time scale UV/X-rayvariability. We find very rapid (<10 ks) UV flares of small amplitude. We showthat, unless this emission is non-thermal, we must be seeing the Wien tail froma compact (<3 light hours), hot (T > $8\times10^4$ K) region. The possibleassociation with X-ray microflares suggests that we may be seeing the UVsignatures of direct X-ray flare heating of the innermost disk.

The fast UV variability of the active galactic nucleus in Fairall 9