767 citations · 3.5k across the 68 of their papers we have counts for
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astro-ph.HE2013★ 37 cited
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…
astro-ph.HE2013★ 53 cited
X-ray Outflows and Super-Eddington Accretion in the Ultraluminous X-ray Source Holmberg IX X-1
D. J. Walton, J. M. Miller, F. A. Harrison +4
Studies of X-ray continuum emission and flux variability have not conclusively revealed the nature of ultra-luminous X-ray sources (ULXs) at the high-luminosity end of the distribu…