152 citations · 2.4k across the 122 of their papers we have counts for
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The MEXSAS2 Sample and the Ensemble X-ray Variability of Quasars
R. Serafinelli, F. Vagnetti, E. Chiaraluce +1
We present the second Multi-Epoch X-ray Serendipitous AGN Sample (MEXSAS2), extracted from the 6th release of the XMM Serendipitous Source Catalogue (XMMSSC-DR6), cross-matched wit…
The NuSTAR view of the true Type 2 Seyfert NGC3147
Stefano Bianchi, Andrea Marinucci, Giorgio Matt +6
We present the first NuSTAR observation of a 'true' Type 2 Seyfert galaxy. The 3-40 keV X-ray spectrum of NGC3147 is characterised by a simple power-law, with a standard Γ~1.7 and…
Ensemble quasar spectral variability from the XMM-Newton Serendipitous Source Catalogue
Roberto Serafinelli, Fausto Vagnetti, Riccardo Middei
Variations of the X-ray spectral slope have been found in many Active Galactic Nuclei (AGN) at moderate luminosities and redshifts, typically showing a "softer when brighter" behav…
Quasar spectral variability from the XMM-Newton serendipitous source catalogue
R. Serafinelli, F. Vagnetti, R. Middei
Context. X-ray spectral variability analyses of active galactic nuclei (AGN) with moderate luminosities and redshifts typically show a softer when brighter behaviour. Such a trend…