438 citations · 4.6k across the 51 of their papers we have counts for
4 papers · 1 filter
The nature of the unresolved extragalactic soft CXB
N. Cappelluti, P. Ranalli, M. Roncarelli +11
In this paper we investigate the power spectrum of the unresolved 0.5-2 keV CXB with deep Chandra 4 Ms observations in the CDFS. We measured a signal which, on scales >30", is sign…
A Mexican Hat with holes: calculating low resolution power spectra from data with gaps
P. Arevalo, E. Churazov, I. Zhuravleva +2
A simple method for calculating a low-resolution power spectrum from data with gaps is described. The method is a modification of the -variance method previously described by St…
The `harder when brighter' X-ray behaviour of the low luminosity active galactic nucleus NGC 7213
D. Emmanoulopoulos, I. E. Papadakis, I. M. McHardy +3
We present the first robust evidence of an anti-correlation between the X-ray photon index, Γ, and the X-ray luminosity in a single low luminosity active galactic nuclei (LLAGN), N…
Correlated X-ray/Ultraviolet/Optical variability in the very low mass AGN NGC 4395
D. T. Cameron, I. Mc Hardy, T. Dwelly +4
We report the results of a one year Swift X-ray/UV/optical programme monitoring the dwarf Seyfert nucleus in NGC 4395 in 2008-2009. The UV/optical flux from the nucleus was found t…