Mapping the X-ray reprocessor in NGC 3227

NGC 3227 has it all: rapid Xray variability, a negative lag, variable Fe Kemission and variable absorption. However, no observing campaign to date hasbeen constructed to optimally use the timing and spectroscopic signatures of thereprocessor together to map the Xray gas. We propose to combine 320 ks on XMMand 160 ks on Nustar to isolate reverberation signatures from the circumnucleargas. Our proposed methodology will allow us to measure directly in the lightcurve the actual reverberation delay, the timescale of the delay and the shapeof the transfer function, which give an unambiguous model independentconstraints on the reverberating gas. This gas is key to understanding theaccretion process and the coevolution of galaxies and their nuclear black holes. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]