Publications (135)
Constraining the black hole mass and accretion rate in the narrow-line Seyfert 1 RE J1034+396
E. M. Puchnarewicz, K. O. Mason, A. Siemiginowska +4
ASCA detection of the FeK edge in the spectrum of the Seyfert 2 galaxy IRAS 04575-7537: a sign of a complex absorber
C. Vignali, A. Comastri, G. M. Stirpe +5
ASCA and ROSAT X-ray Spectra of IC 5063 and NGC 3998
C. Vignali, A. Comastri, M. Cappi +1
BeppoSAX observation of NGC 7674: a new reflection-dominated Seyfert 2 galaxy
G. Malaguti, G. G. C. Palumbo, M. Cappi +6
The XMM-Newton wide-field survey in the COSMOS field II: X-ray data and the logN-logS
N. Cappelluti, G. Hasinger, M. Brusa +13
X-ray Spectral Survey with XMM--Newton of a Complete Sample of Nearby Seyfert Galaxies
M. Cappi, F. Panessa, L. Bassani +15
The HELLAS2XMM survey. X. The bolometric output of luminous obscured quasars: The Spitzer perspective
F. Pozzi, C. Vignali, A. Comastri +10
Gamma-loud quasars: a view with BeppoSAX
F. Tavecchio, L. Maraschi, G. Ghisellini +12
BeppoSAX observations of Narrow-Line Seyfert 1 galaxies: II. Ionized iron features in Arakelian 564
A. Comastri, G. M. Stirpe, C. Vignali +8
Science with Simbol-X
F. Fiore, M. Arnaud, U. Briel +20
The blazar PKS 0528+134: new results from BeppoSAX observations
G. Ghisellini, L. Costamante, G. Tagliaferri +14
Disclosing the true nature of the Sy 2 galaxy NGC 3281: one more Compton-thick source
C. Vignali, A. Comastri
X-rays from the Highly Polarized Broad Absorption Line QSO CSO 755
W. N. Brandt, A. Comastri, S. C. Gallagher +3
The HELLAS2XMM survey: I. The X-ray data and the Log(N)-Log(S)
A. Baldi, S. Molendi, A. Comastri +3
The BeppoSAX view of the hard X-ray background
A. Comastri, F. Fiore, P. Giommi +5
On the nature of X-ray Bright Optically Normal galaxies
A. Comastri, M. Brusa, P. Ciliegi +10
The evolution of AGN in the Hard X-rays from HELLAS
F. La Franca, F. Fiore, C. Vignali +3
An XMM-Newton survey of Extremely Red Objects
M. Brusa, A. Comastri, E. Daddi +2
The quest for Type 2 quasars: Chandra observations of luminous obscured quasars in the Sloan Digital Sky Survey
C. Vignali, D. M. Alexander, A. Comastri
BeppoSAX/PDS identification of the true counterpart of the Piccinotti source H0917-074
A. Malizia, G. Malaguti, L. Bassani +5
The contribution of active galaxies to the far-infrared and submillimeter backgrounds
M. Brusa, A. Comastri, C. Vignali
Extended X-ray emission from FRIIs and RL quasars
G. Setti, G. Brunetti, A. Comastri
The spatial clustering of X-ray selected AGN in the XMM-COSMOS field
R. Gilli, G. Zamorani, T. Miyaji +70
The First Release COSMOS Optical and Near-IR Data and Catalog
P. Capak, H. Aussel, M. Ajiki +54
Probing the hard X-ray properties of high-redshift Radio-Quiet Quasars with ASCA
C. Vignali, A. Comastri, M. Cappi +3
The HELLAS2XMM survey. V. Near-Infrared observations of X-ray sources with extreme X/O ratios
M. Mignoli, L. Pozzetti, A. Comastri +12
The XMM-Newton wide-field survey in the COSMOS field. IV: X-ray spectral properties of Active Galactic Nuclei
V. Mainieri, G. Hasinger, N. Cappelluti +25
BeppoSAX view of NGC 526A: a Seyfert 1.9 galaxy with a flat spectrum
R. Landi, L. Bassani, G. Malaguti +8
The 2-10 keV luminosity as a Star Formation Rate indicator
P. Ranalli, A. Comastri, G. Setti
The BeppoSAX view of the X-ray active nucleus of NGC4258
F. Fiore, S. Pellegrini, G. Matt +9
The HELLAS2XMM survey: VI. X-ray absorption in the 1dfAGN sample through a spectral analysis
G. C. Perola, S. Puccetti, F. Fiore +13
The BeppoSAX High Energy Large Area Survey -V. The nature of the hard X-ray source populations and its evolution
F. La Franca, F. Fiore, C. Vignali +7
The Simbol-X view of the unresolved X-ray background
A. Comastri, R. Gilli, F. Fiore +3
The HELLAS2XMM survey: XI. Unveiling the nature of X-ray Bright Optically Normal Galaxies
F. Civano, M. Mignoli, A. Comastri +8
Suzaku observation of the Phoenix Galaxy
G. Matt, S. Bianchi, H. Awaki +5
The XMM-Newton survey of the ELAIS-S1 field II: optical identifications and multiwavelength catalogue of X-ray sources
C. Feruglio, F. Fiore, F. La Franca +13
XEUS - The X-ray Evolving Universe Spectroscopy Mission
A. N. Parmar, T. Peacock, M. Bavdaz +19
X-ray bright optically quiet galaxies: the case of P3
A. Comastri, M. Brusa, P. Ciliegi +10
The hard X-ray view of the low-luminosity blazar in the radio galaxy NGC6251
M. Guainazzi, P. Grandi, A. Comastri +1
Optical-IUE observations of the gamma-ray loud BL Lacertae object S5 0716+714: data and interpretation
G. Ghisellini, M. Villata, C. M. Raiteri +14
Compton-thick AGN and the Synthesis of the Cosmic X-ray Background: the Suzaku Perspective
R. Gilli, A. Comastri, C. Vignali +1
The BeppoSAX High Energy Large Area Survey HELLAS, II: Number counts and X-ray spectral properties
F. Fiore, P. Giommi, C. Vignali +7
A Unifying View of the Spectral Energy Distributions of Blazars
G. Fossati, L. Maraschi, A. Celotti +2
The Cosmic Evolution Survey (COSMOS): a large-scale structure at z=0.73 and the relation of galaxy morphologies to local environment
L. Guzzo, P. Cassata, A. Finoguenov +29
Chandra study of an overdensity of X-ray sources around two distant (z~0.5) clusters
M. Cappi, P. Mazzotta, M. Elvis +21
Chandra detection of the radio and optical double hot spot of 3C 351
G. Brunetti, M. Bondi, A. Comastri +4
On the peculiar X-ray properties of the bright nearby radio-quiet quasar PDS456
C. Vignali, A. Comastri, F. Nicastro +3
The obscured quasar population from optical, mid-infrared, and X-ray surveys
C. Vignali, A. Comastri, D. M. Alexander
Compton thick AGN in the Suzaku era
A. Comastri, R. Gilli, C. Vignali +3
The HELLAS2XMM 1dF survey: on the nature of high X-ray to optical flux ratio sources
F. Fiore, M. Brusa, F. Cocchia +12
XMM-Newton observations of Extremely Red Objects and the link with luminous, X-ray obscured Quasars
M. Brusa, A. Comastri, E. Daddi +8
BeppoSAX broad-band observations of low-redshift quasars: Spectral curvature and iron K_alpha lines
T. Mineo, F. Fiore, A. Laor +7
The Growth of Supermassive Black Holes Across Cosmic Time
K. Nandra, J. A. Aird, D. M. Alexander +54
BeppoSAX Observations of Bright Seyfert 2 Galaxies: Measuring the Intrinsic Continuum Emission
L. Bassani, M. Cappi, G. Malaguti +19
The colours of the X-ray background
A. Comastri
HEXIT-SAT: a mission concept for X-ray grazing incidence telescopes from 0.5 to 70 keV
F. Fiore, G. C. Perola, G. Pareschi +3
BeppoSAX observations of Narrow-Line Seyfert 1 galaxies:I. Ton S 180
A. Comastri, F. Fiore, M. Guainazzi +10
The BeppoSAX High Energy Large Area Survey (HELLAS) - VI. The radio properties
P. Ciliegi, C. Vignali, A. Comastri +3
The BeppoSAX High Energy Large Area Survey (HELLAS)
F. Fiore, P. Giommi, F. La Franca +9
XMM-Newton Spectroscopy of the Highly Polarized and Luminous Broad Absorption Line Quasar CSO 755
O. Shemmer, W. N. Brandt, S. C. Gallagher +4
The BeppoSAX HELLAS survey: on the nature of faint hard X-ray selected sources
F. Fiore, L. A. Antonelli, P. Ciliegi +8
The Nuclear Spectral Energy Distribution of NGC 4395, The Least Luminous Type 1 Seyfert Galaxy
E. C. Moran, A. V. Filippenko, L. C. Ho +5
The XMM-Newton view of IRAS 09104+4109: evidence for a changing-look Type 2 quasar?
E. Piconcelli, F. Fiore, F. Nicastro +4
The nuclear accretion in the FR I radio galaxy IC4296 from CHANDRA and VLBA observations
S. Pellegrini, T. Venturi, A. Comastri +5
Extremely Red Objects: an X-ray dichotomy
M. Brusa, A. Comastri, E. Daddi +3
X-ray source counts in the COSMOS field
N. Cappelluti, G. Hasinger, M. Brusa +13
1H0419-577: A "two-state" soft X-ray Seyfert galaxy
M. Guainazzi, A. Comastri, G. M. Stripe +8
The XMM-Newton wide-field survey in the COSMOS field: VI. Statistical properties of clusters of galaxies
A. Finoguenov, L. Guzzo, G. Hasinger +30
Beyond the X-ray background with XEUS
A. Comastri, P. Ranalli, M. Brusa
Stellar and gaseous abundances in M82
L. Origlia, P. Ranalli, A. Comastri +1
The contribution of AGN to the X-ray background: the effect of iron features
R. Gilli, A. Comastri, G. Brunetti +1
Multi-wavelength data handling in current and future surveys: the possible role of Virtual Observatory
C. Vignali, F. Fiore, A. Comastri +5
The complex X-ray absorbers of NGC 3516 observed by BeppoSAX
E. Costantini, F. Nicastro, A. Fruscione +10
The contribution of faint AGN to the hard X-ray background
F. Fiore, F. La Franca, P. Giommi +5
The XMM-Newton survey of the ELAIS-S1 field. I: Number counts, angular correlation function and X-ray spectral properties
S. Puccetti, F. Fiore, V. D'Elia +16
The Hellas2XMM survey: III. Multiwavelength observations of hard X-ray selected sources in the PKS 0312-77 field
M. Brusa, A. Comastri, M. Mignoli +11
AGN unified scheme and evolution: a Suzaku view
A. Comastri, K. Iwasawa, R. Gilli +2
Heavily obscured AGN with BeppoSAX, INTEGRAL, SWIFT, XMM and Chandra: prospects for Simbol-X
R. Della Ceca, P. Severgnini, A. Caccianiga +6
BeppoSax Spectral Survey of soft X-ray selected BL Lacs
A. Wolter, A. Comastri, G. Ghisellini +10
Elusive Active Galactic Nuclei
R. Maiolino, A. Comastri, R. Gilli +8
Anisotropic inverse Compton emission in the radio galaxy 3C 265
M. Bondi, G. Brunetti, A. Comastri +1
High Energy Large Area Surveys: from BeppoSAX to Chandra and XMM
F. Fiore, A. Comastri, F. La Franca +3
X-ray spectroscopy and time variability of Narrow Line Seyfert 1
F. Cancelliere, A. Comastri
The HELLAS2XMM Survey. XII. The infrared/sub-millimeter view of an X-ray selected Type 2 quasar at z=2
C. Vignali, F. Pozzi, J. Fritz +11
Optical, near-infrared and hard X-ray observations of SAXJ1353.9+1820: a red quasar
C. Vignali, M. Mignoli, A. Comastri +2
The HELLAS2XMM survey: II. Multiwavelength observations of P3: an X-ray bright, optically inactive galaxy
A. Comastri, M. Mignoli, P. Ciliegi +11
The HELLAS2XMM survey. IX. Spectroscopic identification of super-EROs hosting AGNs
R. Maiolino, M. Mignoli, L. Pozzetti +12
The First High-Energy X-Ray Spectrum of a Z$>2$ Radio-Quiet Quasar: Q1101-264
C. Vignali, A. Comastri, M. Cappi +1
Can Flat Spectrum Radio Quasars make most of the overall gamma--ray background ?
A. Comastri, T. Di Girolamo, G. Setti
The obscured X-ray source population in the HELLAS2XMM survey: the Spitzer view
C. Vignali, Francesca Pozzi, A. Comastri +9
Chandra discovery of extended non-thermal emission in 3C 207 and the spectrum of the relativistic electrons
G. Brunetti, M. Bondi, A. Comastri +1
Hidden activity in high-redshift spheroidal galaxies from mid-infrared and X-ray observations in the GOODS-North field
G. Rodighiero, C. Gruppioni, F. Civano +6
The XMM-Newton wide-field survey in the COSMOS field: III. optical identification and multiwavelength properties of a large sample of X-ray selected sources
M. Brusa, G. Zamorani, A. Comastri +31
Highly Ionized Neon in the Spectrum of the Sey 2 Galaxy NGC 4507 ?
C. Vignali, R. Audano, A. Comastri +2
The BeppoSAX High Energy Large Area Survey (HELLAS): a progress Report
A. Comastri, F. Fiore, C. Vignali +2
The BeppoSAX High Energy Large Area Survey. IV. On the soft X-ray properties of the hard X-ray-selected HELLAS sources
C. Vignali, A. Comastri, F. Fiore +1
Demography of obscured and unobscured AGN: prospects for a Wide Field X-ray Telescope
R. Gilli, P. Tozzi, P. Rosati +7
Inverse Compton X-rays from strong FRII radio-galaxies
G. Brunetti, G. Setti, A. Comastri
Obscured accreting black holes at high redshift
A. Comastri, F. Fiore, C. Vignali +2
ASCA view on High-Redshift Radio-Quiet Quasars
C. Vignali, A. Comastri, M. Cappi +2