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.
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Journal ArticleDOI
A qualitative test of a unified model of Seyfert galaxies with BeppoSAX
M. Cappi,Loredana Bassani,Giuseppe Malaguti,Giorgio G. C. Palumbo,M. Dadina,Andrea Comastri,G. Di Cocco,Philip Blanco,D. Dal Fiume,A. C. Fabian,Filippo Frontera,Matteo Guainazzi,T. Maccacaro,Roberto Maiolino,Giorgio Matt,L. Piro,M. Trifoglio,N. Zhang +17 more
TL;DR: The broad band 0.1-200 keV spectra of a sample of 5 Seyfert 2 galaxies (NGC 7172, Mkn 3, NGC 2110 and NGC 4507) have been measured within the first year of the BeppoSAX Core program as mentioned in this paper.
Posted Content
On the nature of X-ray Bright Optically Normal galaxies
Andrea Comastri,Marcella Brusa,Paolo Ciliegi,M. Mignoli,Fabrizio Fiore,Roberto Maiolino,Paola Severgnini,Alessandro Baldi,S. Molendi,Cristian Vignali,F. La Franca,Giorgio Matt,G. C. Perola +12 more
TL;DR: In this article, a population of optically dull, X-ray bright galaxies emerging at 2-10 keV fluxes of the order of 10−14− erg cm^{-2} s^{-1}.
Journal ArticleDOI
Studying the evolution of the hot universe with the X-ray evolving universe spectroscopy mission – XEUS
Arvind Parmar,Günther Hasinger,M. Arnaud,Xavier Barcons,Didier Barret,Hans Böhringer,Alain Blanchard,M. Cappi,Andrea Comastri,T. J. L. Courvoisier,A. C. Fabian,Fabrizio Fiore,I. Georgantopoulos,Paola Grandi,Richard E. Griffiths,Allan Hornstrup,N. Kawai,Katsuji Koyama,Kazuo Makishima,Giuseppe Malaguti,Keith O. Mason,C. Motch,Mariano Mendez,Takaya Ohashi,F. B. S. Paerels,L. Piro,Trevor J. Ponman,J. H. M. M. Schmitt,Salvatore Sciortino,G. Trinchieri,M. van der Klis,Martin Ward +31 more
TL;DR: XUS as discussed by the authors is a long-term X-ray observatory with an initial mirror area of 6 m 2 at 1 keV that will be expanded to 30 m 2 following a visit to the ISS.
Journal ArticleDOI
Erratum: "NuSTAR Unveils a Compton-thick Type 2 Quasar in MrK 34" (2014, ApJ, 792, 117)
Poshak Gandhi,George B. Lansbury,David M. Alexander,D. Stern,P. Arévalo,P. Arévalo,David R. Ballantyne,Mislav Baloković,Franz E. Bauer,Franz E. Bauer,Franz E. Bauer,S. E. Boggs,W. N. Brandt,Murray Brightman,Finn Erland Christensen,Andrea Comastri,William W. Craig,William W. Craig,A. Del Moro,Martin Elvis,A. C. Fabian,C. J. Hailey,Fiona A. Harrison,Ryan C. Hickox,M. Koss,Stephanie M. LaMassa,B. Luo,B. Luo,Grzegorz Madejski,Andy Ptak,Simonetta Puccetti,Simonetta Puccetti,Stacy H. Teng,C. M. Urry,Dominic J. Walton,W. W. Zhang +35 more
TL;DR: NuSTAR 3-40 keV observations of the optically selected Type 2 quasar (QSO2) SDSS J1034+6001 or Mrk 34 as discussed by the authors showed that NH lies in the Compton-thick (CT) regime.
Journal ArticleDOI
The HELLAS2XMM survey. XIII. Multi-component analysis of the spectral energy distribution of obscured AGN
Francesca Pozzi,Francesca Pozzi,Cristian Vignali,Cristian Vignali,Andrea Comastri,E. Bellocchi,Jacopo Fritz,Carlotta Gruppioni,M. Mignoli,Roberto Maiolino,Lucia Pozzetti,Marcella Brusa,Fabrizio Fiore,G. Zamorani +13 more
TL;DR: In this article, the authors combine near-to-mid-IR Spitzer data with shorter wavelength observations (optical to X-rays) to get insights on the properties of a sample of luminous, obscured Active Galactic Nuclei (AGN).