512 citations · 3.7k across the 117 of their papers we have counts for
14 papers · 1 filter
Peering Into the Extended X-ray Emission on Megaparsec Scale in 3C 187
A. Paggi, F. Massaro, H. A. Pena-Herazo +7
Context. The diffuse X-ray emission surrounding radio galaxies is generally interpreted either as due to inverse Compton scattering of non-thermal radio-emitting electrons on the C…
Extended X-ray emission around FR II radio galaxies: hotspots, lobes and galaxy clusters
Ana Jimenez-Gallardo, Francesco Massaro, Alessandro Paggi +20
We present a systematic analysis of the extended X-ray emission discovered around 35 FR II radio galaxies from the revised Third Cambridge catalog (3CR) Chandra Snapshot Survey wit…
Optical spectroscopic observations of low-energy counterparts of Fermi-LAT gamma-ray sources
H. A. Peña-Herazo, R. A. Amaya-Almazán, F. Massaro +15
A significant fraction of all -ray sources detected by the Large Area Telescope aboard the \fer\ satellite is still lacking a low-energy counterpart. In addition, there is still…
Dragon's Lair: on the large-scale environment of BL Lac objects
F. Massaro, A. Capetti, A. Paggi +4
The most elusive and extreme sub-class of active galactic nuclei (AGNs), known as BL Lac objects, shows features that can only be explained as the result of relativistic effects oc…
Revisiting the complex nuclear region of NGC 6240 with Chandra
G. Fabbiano, A. Paggi, M. Karovska +3
We present a reanalysis of the cumulative ACIS S Chandra data set pointed at the double AGNs of the NGC 6240 merging galaxy, focusing on the hard energy bands containing the hard s…
The -ray sky seen at X-ray energies II: the Swift hunt of Fermi BL Lac objects among unidentified gamma-ray sources
E. J. Marchesini, A. Paggi, F. Massaro +3
Nearly 50% of all sources detected by the Fermi Large Area Telescope are classified as blazars or blazar candidates, one of the most elusive classes of active galaxies. Additional…