A
Andrea Comastri
Researcher at INAF
Publications - 718
Citations - 52821
Andrea Comastri is an academic researcher from INAF. The author has contributed to research in topics: Galaxy & Active galactic nucleus. The author has an hindex of 111, co-authored 706 publications receiving 49119 citations. Previous affiliations of Andrea Comastri include University of Bologna & Max Planck Society.
Papers
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Journal ArticleDOI
New Spectral Model for Constraining Torus Covering Factors from Broadband X-Ray Spectra of Active Galactic Nuclei
Mislav Baloković,Mislav Baloković,M. Brightman,Fiona A. Harrison,Andrea Comastri,Claudio Ricci,Claudio Ricci,Claudio Ricci,Johannes Buchner,Johannes Buchner,Poshak Gandhi,Duncan Farrah,Daniel Stern +12 more
TL;DR: In this article, a grid of X-ray spectral templates based on radiative transfer calculations in neutral gas in an approximately toroidal geometry is presented for CCD-resolution Xray spectra (FWHM ≥ 130 eV).
Journal ArticleDOI
THE XMM-NEWTON WIDE FIELD SURVEY IN THE COSMOS FIELD: REDSHIFT EVOLUTION OF AGN BIAS AND SUBDOMINANT ROLE OF MERGERS IN TRIGGERING MODERATE-LUMINOSITY AGNs AT REDSHIFTS UP TO 2.2
Viola Allevato,Alexis Finoguenov,Nico Cappelluti,Nico Cappelluti,Takamitsu Miyaji,Takamitsu Miyaji,Günther Hasinger,Mara Salvato,Marcella Brusa,Roberto Gilli,G. Zamorani,Francesco Shankar,J. B. James,J. B. James,H. J. McCracken,Angela Bongiorno,Andrea Merloni,John A. Peacock,John D. Silverman,Andrea Comastri +19 more
TL;DR: In this paper, the authors studied the redshift evolution of the projected correlation function of 593 X-ray selected active galactic nuclei (AGNs) with I_(AB) < 23 and spectroscopic redshifts z < 4.
Book ChapterDOI
Compton-Thick AGN: The Dark Side of the X-Ray Background
TL;DR: The properties of active galactic nuclei (AGN) are reviewed in this paper, with particular emphasis on their contributions to the extragalactic background light in the hard X-ray and infrared bands.
Journal ArticleDOI
The XMM-Newton wide-field survey in the COSMOS field II: X-ray data and the logN-logS
Nico Cappelluti,G. Hasinger,Marcella Brusa,Andrea Comastri,G. Zamorani,Hans Boehringer,Hermann Brunner,Francesca Civano,A. Finoguenov,Fabrizio Fiore,Roberto Gilli,Richard E. Griffiths,Vincenzo Mainieri,I. Matute,Takamitsu Miyaji,John D. Silverman +15 more
TL;DR: In this article, the first season of XMM-Newton observations in the COSMOS field was presented and the data analysis and the X-ray source counts were presented.
Journal ArticleDOI
The Obscured Fraction of AGN in the XMM-COSMOS Survey: A Spectral Energy Distribution Perspective
Elisabeta Lusso,Joseph F. Hennawi,Andrea Comastri,G. Zamorani,Gordon T. Richards,C. Vignali,E. Treister,Kevin Schawinski,Mara Salvato,Roberto Gilli +9 more
TL;DR: In this paper, the authors estimate the obscured fraction as a function of luminosity and redshift for 513 Type-1 AGN from the XMM-COSMOS survey.