X-ray time delays in NGC 6814

When combined with high S/N spectroscopy, Xray timing properties inparticular, Xray time lags allow one to gain physical insights into accretionand reprocessing near black holes in unprecedented detail. Here, we propose onesuch study of NGC 6814 (130ks) a rapidly variable AGN in which a recent Suzakuobservation revealed the presence of a strong hard lag with an intriguingenergydependence while interestingly displaying no evidence of strongreprocessing in its Xray spectrum. By utilising the high sensitivity ofXMMNewton we propose to perform a detailed spectraltiming study of NGC 6814,taking full advantage of the opportunity to test the hypotheses surrounding theproduction of Xray time delays in an environment free from complex spectral components. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]