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UV and optical continuum reverberation mapping is powerful for probing theaccretion disk and inner broad-line region. However, recent reverberationmapping campaigns in the X-ray, UV, and optical have found lags consistentlylonger than those expected from the standard disk reprocessing picture. Thelargest discrepancy to-date was recently reported in Mrk 335, where UV/opticallags are up to 12 times longer than expected. Here, we perform afrequency-resolved time lag analysis of Mrk 335, using Gaussian processes toaccount for irregular sampling. For the first time, we compare the Fourierfrequency-resolved lags directly to those computed using the popularInterpolated Cross-Correlation Function (ICCF) method applied to both theoriginal and detrended light curves. We show that the anticipated diskreverberation lags are recovered by the Fourier lags when zeroing in on theshort-timescale variability. This suggests that a separate variabilitycomponent is present on long timescales. If this separate component is modeledas reverberation from another region beyond the accretion disk, we constrain asize-scale of roughly 15 light-days from the central black hole. This isconsistent with the size of the broad line region inferred from H$\beta$reverberation lags. We also find tentative evidence for a soft X-ray lag, whichwe propose may be due to light travel time delays between the hard X-ray coronaand distant photoionized gas that dominates the soft X-ray spectrum below 2keV.

X-ray/UVOIR Frequency-resolved Time Lag Analysis of Mrk 335 Reveals Accretion Disk Reprocessing