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Modelling the broad Fe Kα reverberation in the AGN NGC 4151
E. M. Cackett, A. Zoghbi, C. Reynolds +4
The recent detection of X-ray reverberation lags, especially in the Fe Kα line region, around Active Galactic Nuclei (AGN) has opened up the possibility of studying the time-resolv…
The curious time lags of PG 1244+026: Discovery of the iron K reverberation lag
E. Kara, E. M. Cackett, A. C. Fabian +2
High-frequency iron K reverberation lags, where the red wing of the line responds before the line centroid, are a robust signature of relativistic reflection off the inner accretio…
Principal Component Analysis of MCG--6-30-15 with XMM-Newton
M. L. Parker, A. Marinucci, L. Brenneman +4
We analyse the spectral variability of MCG--06-30-15 with 600 ks of XMM-Newton data, including 300 ks of new data from the joint XMM-Newton and NuSTAR 2013 observational campaign.…
Hard X-ray Lags in Active Galactic Nuclei: Testing the Distant Reverberation Hypothesis with NGC 6814
D. J. Walton, A. Zoghbi, E. M. Cackett +7
We present an X-ray spectral and temporal analysis of the variable active galaxy NGC 6814, observed with Suzaku during November 2011. Remarkably, the X-ray spectrum shows no eviden…
Discovery of high-frequency iron K lags in Ark 564 and Mrk 335
E. Kara, A. C. Fabian, E. M. Cackett +3
We use archival XMM-Newton observations of Ark 564 and Mrk 335 to calculate the frequency dependent time-lags for these two well-studied sources. We discover high-frequency Fe K la…
The Hot and Energetic Universe: The close environments of supermassive black holes
Michal Dovciak, Giorgio Matt, Stefano Bianchi +22
Most of the action in Active Galactic Nuclei (AGN) occurs within a few tens of gravitational radii from the supermassive black hole, where matter in the accretion disk may lose up…