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
NuSTAR Spectroscopy of Multi-Component X-ray Reflection from NGC 1068
Franz E. Bauer,Patricia Arevalo,Dominic J. Walton,Michael Koss,Simonetta Puccetti,Poshak Gandhi,Daniel Stern,David M. Alexander,Mislav Baloković,S. E. Boggs,W. N. Brandt,M. Brightman,Finn E. Christensen,Andrea Comastri,William W. Craig,Agnese Del Moro,Charles J. Hailey,Fiona A. Harrison,Ryan C. Hickox,Bin Luo,Craig B. Markwardt,Andrea Marinucci,Giorgio Matt,Jane R. Rigby,E. Rivers,Cristian Saez,Ezequiel Treister,C. Megan Urry,William W. Zhang +28 more
TL;DR: In this paper, the authors report on observations of NGC1068 with NuSTAR, which provide the best constraints to date on its > 10 keV spectral shape, with no strong continuum or line variability over the past two decades, consistent with its classification as a Compton-thick AGN.
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Direct Lyman continuum and Ly α escape observed at redshift 4
Eros Vanzella,Mario Nonino,Guido Cupani,Marco Castellano,E. Sani,M. Mignoli,Francesco Calura,Massimo Meneghetti,Roberto Gilli,Andrea Comastri,Amata Mercurio,G. B. Caminha,Karina Caputi,Piero Rosati,Piero Rosati,Claudio Grillo,Claudio Grillo,Stefano Cristiani,Italo Balestra,Adriano Fontana,Mauro Giavalisco +20 more
TL;DR: In this article, the authors report the discovery of a z = 4.0, M-1500 = -22.20 star-forming galaxy (Ion3) showing copious Lyman continuum (LyC) leakage (similar to 60 per cent escaping), a remarkable multiple peaked Ly alpha emission, and significant Ly alpha radiation directly emerging at the resonance frequency.
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Fast outflows and star formation quenching in quasar host galaxies
Stefano Carniani,Alessandro Marconi,Alessandro Marconi,Roberto Maiolino,Barbara Balmaverde,Marcella Brusa,Marcella Brusa,M. Cano-Díaz,Claudia Cicone,Andrea Comastri,Giovanni Cresci,Fabrizio Fiore,Chiara Feruglio,F. La Franca,V. Mainieri,Filippo Mannucci,Tohru Nagao,Hagai Netzer,Enrico Piconcelli,Guido Risaliti,Raffaella Schneider,Ohad Shemmer +21 more
TL;DR: In this paper, the authors acknowledge financial support from INAF and the Italian Ministry of University and Research under the contracts PRIN-INAF-2011 (“Black Hole growth and AGN feedback through cosmic time”) and PRIN MIUR 2010-2011(“The dark Universe and the cosmic evolution of baryons”).
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Elusive active galactic nuclei
Roberto Maiolino,Andrea Comastri,Roberto Gilli,Nm Nagar,Stefano Bianchi,Torsten Böker,Edward Colbert,Alfred Krabbe,Alessandro Marconi,Giorgio Matt,M. Salvati +10 more
TL;DR: In this paper, the authors combine new Chandra observations with archival X-ray data in order to obtain a first estimate of the fraction of elusive active galactic nuclei (AGN) in local galaxies and to constrain their nature.
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The COSMOS AGN Spectroscopic Survey I: XMM Counterparts
Jonathan R. Trump,Chris Impey,Martin Elvis,Patrick J. McCarthy,John P. Huchra,Marcella Brusa,Mara Salvato,Peter Capak,Nico Cappelluti,Francesca Civano,Andrea Comastri,Jared M. Gabor,Heng Hao,Günther Hasinger,Knud Jahnke,Brandon C. Kelly,Simon J. Lilly,Eva Schinnerer,Nick Scoville,Vernesa Smolčić +19 more
TL;DR: In this paper, the authors present optical spectroscopy for an X-ray and optical flux-limited sample of 677 XMM-Newton selected targets covering the 2 deg^2 COSMOS field, with a yield of 485 high-confidence redshifts.