294 citations · 1.3k across the 44 of their papers we have counts for
13 papers · 1 filter
SPACE: the SPectroscopic All-sky Cosmic Explorer
A. Cimatti, M. Robberto, C. M. Baugh +18
We describe the scientific motivations, the mission concept and the instrumentation of SPACE, a class-M mission proposed for concept study at the first call of the ESA Cosmic-Visio…
Rolling down from the 30 keV peak: modelling the hard X-ray and gamma-ray backgrounds
Andrea Comastri, Roberto Gilli, Guenther Hasinger
We will briefly discuss the importance of sensitive X-ray observations above a few tens of keV for a better understanding of the physical mechanisms associated to the Supermassive…
BeppoSAX observations of LINER-2 galaxies
I. Georgantopoulos, F. Panessa, A. Akylas +3
We present BeppoSAX observations of 6 ``type-2'' LINER and ``transition'' galaxies (NGC3379, NGC3627, NGC4125, NGC4374, NGC5195 and NGC5879)from the Ho et al. (1997) spectroscopic…
Disclosing the true nature of the Sy 2 galaxy NGC 3281: one more Compton-thick source
C. Vignali, A. Comastri
We present the BeppoSAX broad-band X-ray spectrum of the Seyfert 2 galaxy NGC 3281. The source high-energy spectrum is characterized by the nuclear transmitted component, with an a…
X-ray bright optically quiet galaxies: the case of P3
A. Comastri, M. Brusa, P. Ciliegi +10
Recent X-ray surveys have clearly demonstrated that a population of optically dull, X-ray bright galaxies is emerging at X-ray fluxes of the order of 10-14 erg cm-2 s-1. The nature…
The HELLAS2XMM survey: I. The X-ray data and the Log(N)-Log(S)
A. Baldi, S. Molendi, A. Comastri +3
We present the first results from an XMM-Newton serendipitous medium-deep survey, which covers nearly three square degrees. We detect a total of 1022, 495 and 100 sources, down to…