1 citations · 1 across the 2 of their papers we have counts for
3 papers
astro-ph2004
Chandra discovery of activity in the quiescent nuclear black hole of NGC821
A. Baldi, G. Fabbiano, S. Pellegrini +4
We report the results of the Chandra ACIS-S observations of the elliptical galaxy NGC 821, which harbors a supermassive nuclear black hole (of 3.5x10^7 solar masses), but does not…
astro-ph2002★ 1 cited
Beyond the X-ray background with XEUS
A. Comastri, P. Ranalli, M. Brusa
We briefly discuss the perspectives of sensitive hard X-ray observations with the large collecting area X-ray telescopes of XEUS.
astro-ph1996
Can Flat Spectrum Radio Quasars make most of the overall gamma--ray background ?
A. Comastri, T. Di Girolamo, G. Setti
The contribution of discrete sources to the gamma--ray background is modeled. Flat spectrum radio quasars are known to make a substantial contribution to the hard (E > 100 MeV) bac…