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
Extragalactic X-ray surveys: AGN physics and evolution
Andrea Comastri,Marcella Brusa +1 more
TL;DR: In this article, the most important findings on AGN physics and cosmological evolution as obtained by extragalactic X-ray surveys and associated multiwavelength observations are reviewed.
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X-ray properties of radio-selected star forming galaxies in the Chandra-COSMOS survey
Piero Ranalli,Piero Ranalli,Andrea Comastri,Gianni Zamorani,Nico Cappelluti,F. Civano,I. Georgantopoulos,Roberto Gilli,Eva Schinnerer,Vernesa Smolčić,Vernesa Smolčić,Cristian Vignali +11 more
TL;DR: In this article, a detailed test of the classification schemes and to study the X-ray properties of the resulting samples was carried out and the results showed that ∼30% of composite/misclassified objects are expected because of the higher Xray brightness of AGN with respect to galaxies.
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Discovery of the first heavily obscured QSO candidate at $z>6$ in a close galaxy pair.
Fabio Vito,W. N. Brandt,Franz E. Bauer,Franz E. Bauer,Roberto Gilli,Bin Luo,Gianni Zamorani,Francesco Calura,Andrea Comastri,Chiara Mazzucchelli,M. Mignoli,Riccardo Nanni,Ohad Shemmer,Cristian Vignali,Marcella Brusa,Nico Cappelluti,Francesca Civano,Marta Volonteri +17 more
TL;DR: In this paper, the authors reported the discovery of the first heavily obscured QSO candidate in the early universe, hosted by a close ($\approx 5$ kpc) galaxy pair at $z=6.515.
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Web of the giant: Spectroscopic confirmation of a large-scale structure around the z = 6.31 quasar SDSS J1030+0524
M. Mignoli,Roberto Gilli,Roberto Decarli,Eros Vanzella,Barbara Balmaverde,Nico Cappelluti,Letizia P. Cassarà,Andrea Comastri,Felice Cusano,Kazushi Iwasawa,S. Marchesi,Isabella Prandoni,Cristian Vignali,Fabio Vito,G. Zamorani,Marco Chiaberge,Colin Norman,Colin Norman +17 more
TL;DR: In this article, spectroscopic confirmation of a large-scale structure around the luminous z ǫ = 6.31 quasi-stellar object (QSO) SDSS J1030+0524, powered by a one billion solar mass black hole was reported.
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The WISSH quasars project VII. The impact of extreme radiative field in the accretion disk and X-ray corona interplay.
Luca Zappacosta,Enrico Piconcelli,M. Giustini,G. Vietri,F. Duras,G. Miniutti,M. Bischetti,Angela Bongiorno,Marcella Brusa,M. Chiaberge,Andrea Comastri,Chiara Feruglio,A. Luminari,A. Marconi,Claudio Ricci,C. Vignali,Fabrizio Fiore +16 more
TL;DR: In this paper, a dependence between the intrinsic 2-10 keV luminosity and the blueshifted velocity of the CIV emission line indicative of accretion disc winds was found in WISE/SDSS-selected Hyperluminous (WISSH) sample.