43 citations · 81 across the 3 of their papers we have counts for
3 papers
astro-ph.HE2013★ 1 cited
Ultra-fast outflows (aka UFOs) from AGNs and QSOs
M. Cappi, F. Tombesi, M. Giustini
During the last decade, strong observational evidence has been accumulated for the existence of massive, high velocity winds/outflows (aka Ultra Fast Outflows, UFOs) in nearby AGNs…
astro-ph2008★ 37 cited
On the absorption of X-ray bright broad absorption line quasars
Margherita Giustini, Massimo Cappi, Cristian Vignali
Most X-ray studies of BALQSOs found significant (N_H~10^{22-24} cm^{-2}) intrinsic column densities of gas absorbing an underlying typical power-law continuum emission, in agreemen…
astro-ph2008★ 43 cited
X-ray spectral variability in PG1535+547: the changing-look of a 'soft X-ray weak' AGN
L. Ballo, M. Giustini, N. Schartel +5
PG1535+547 is a bright NLS1 galaxy, whose high energy emission shows strong variability in shape and flux. ROSAT data classified it as soft X-ray weak QSO (objects whose X-ray-to-o…