Foto del docente

Cristian Vignali

Associate Professor

Department of Physics and Astronomy "Augusto Righi"

Academic discipline: FIS/05 Astronomy and Astrophysics

Director of First Cycle Degree in Astronomy

Publications

Silverman J.D.; Mainieri V.; Lehmer B.D.; Alexander D.M.; Bauer F.E.; Bergeron J.; Brandt W.N.; Gilli R.; Hasinger G.; Schneider D.P.; Tozzi P.; Vignali C.; Koekemoer A.M.; Miyaji T.; Popesso P.; Rosati P.; Szokoly G., The Evolution of AGN Host Galaxies: From Blue to Red and the Influence of Large-Scale Structures, «THE ASTROPHYSICAL JOURNAL», 2008, 675, pp. 1025 - 1040 [Scientific article]

Comastri A.; Gilli R.; Fiore F.; Vignali C.; Della Ceca R.; Malaguti G., The Simbol-X view of the unresolved X-ray background, in: Simbol-X: the hard X-ray Universe in focus, s.l, Memories of SAIt, 2008, 79, pp. 59 - 64 (atti di: Simbol-X: the hard X-ray Universe in focus, Bologna, 14-16 maggio (2007)) [Contribution to conference proceedings]

Feruglio C.; Fiore F.; La Franca F.; Sacchi N.; Puccetti S.; Comastri A.; Berta S.; Brusa M.; Franceschini F.; Gruppioni C.; Mathur S.; Matute I.; Mignoli M.; Pozzi F.; Vignali C.; Zamorani G., The XMM-Newton survey of the ELAIS-S1 field II: optical identifications and multiwavelength catalogue of X-ray sources, «ASTRONOMY & ASTROPHYSICS», 2008, 488, pp. 417 - 428 [Scientific article]

Ponti G.; Cappi M.; Genghini M.; Matt G.; Petrucci P.O.; Tombesi F.; Vignali C., Understanding the nature of soft excess with Simbol-X, in: FIORE F., MALAGUTI G., Simbol-X: the hard X-ray Universe in focus, s.l, Memories of SAIt, 2008, 79, pp. 274 - 275 (atti di: Simbol-X: the hard X-ray Universe in focus, Bologna, 14-16 maggio (2007)) [Contribution to conference proceedings]

Fiore F.; Grazian A.; Santini P.; Puccetti S.; Brusa M.; Feruglio C.; Fontana A.; Giallongo E.; Comastri A.; Gruppioni C.; Pozzi F.; Zamorani G.; Vignali C., Unveiling obscured accretion in the Chandra Deep Field South, «THE ASTROPHYSICAL JOURNAL», 2008, 672, pp. 94 - 101 [Scientific article]

Ballo L.; Giustini M.; Schartel N.; Cappi M.; Jimenez-Bailon E.; Piconcelli E.; Santos-Lleo M.; Vignali C., X-ray spectral variability in PG 1535+547: the changing-look "soft X-ray weak" AGN, «ASTRONOMY & ASTROPHYSICS», 2008, 483, pp. 137 - 149 [Scientific article]

Comastri A.; Gilli R.; Vignali C.; Matt G.; Fiore F.; Iwasawa K., Compton-thick AGN in the Suzaku era, in: HAYASHIDA K, TSURU T.G., KOYAMA K., The Extreme Universe in the Suzaku Era, KYOTO, Progress of Theoretical Physics Supplement, 2007, 169, pp. 274 - 277 (atti di: The Extreme Universe in the Suzaku Era, Kyoto, 4-8 dicembre (2006)) [Contribution to conference proceedings]

Rodighiero G.; Gruppioni C.; Civano F.; Comastri A.; Franceschini A.; Mignoli M.; Fritz J.; Vignali C.; Treu T., Hidden activity in high-redshift spheroidal galaxies from mid-infrared and X-ray observations in the GOODS-North field, «MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY», 2007, 376, pp. 416 - 434 [Scientific article]

Cocchia F.; Fiore F.; Vignali C.; Mignoli M.; Brusa M.; Comastri A.; Feruglio C.; Baldi A.; Carangelo N.; Ciliegi P.; D'Elia V.; La Franca F.; Maiolino R.; Matt G.; Molendi S.; Perola G. C.; Puccetti S., The HELLAS2XMM survey. VIII. Optical identifications of the extended sample, «ASTRONOMY & ASTROPHYSICS», 2007, 466, pp. 31 - 40 [Scientific article]

Pozzi F.; Vignali C.; Comastri A.; Pozzetti L.; Mignoli M.; Gruppioni C.; Zamorani G.; Lari C.; Civano F.; Brusa M.; Fiore F.; Maiolino R.; La Franca F., The HELLAS2XMM survey. X. The bolometric output of luminous obscured quasars: The Spitzer perspective, «ASTRONOMY & ASTROPHYSICS», 2007, 468, pp. 603 - 612 [Scientific article]

Civano F.; Mignoli M.; Comastri A.; Vignali C.; Fiore F.; Pozzetti L.; Brusa M.; La Franca F.; Matt G.; Puccetti S.; Cocchia F., The HELLAS2XMM Survey: XI. Unveiling the nature of XBONGs, «ASTRONOMY & ASTROPHYSICS», 2007, 476, pp. 1223 - 1233 [Scientific article]

Vignali C.; Comastri A.; Alexander D.M., The obscured quasar population from optical, mid-infrared, and X-ray surveys, in: At the Edge of the Universe. Latest results from the deepest astronomical surveys, s.l, Astronomical Society of the Pacific, 2007, 380, pp. 113 - 118 (atti di: At the Edge of the Universe. Latest results from the deepest astronomical surveys, Sintra (Portogallo), 9-13 ottobre 2006) [Contribution to conference proceedings]

Vignali C.; Pozzi F.; Comastri A.; Pozzetti L.; Mignoli M.; Gruppioni C.; Zamorani G.; Lari C.; Civano F.; Brusa M.; Fiore F.; Maiolino R., The obscured X-ray source population in the HELLAS2XMM survey: the Spitzer view, in: The multicoloured landscape of compact objects and their explosive origin, NEW YORK, American Institute of Physics, 2007, 924, pp. 864 - 869 (atti di: The multicoloured landscape of compact objects and their explosive origin, Cefalu, 11-24 giugno 2006) [Contribution to conference proceedings]

Mignoli M.; Civano F.; Comastri A.; Vignali C., The puzzling case of XBONGs: will 3D-spectroscopy explain their true nature?, in: Sciences Perspectives for 3D Spectroscopy, s.l, ESO, 2007, pp. 281 - 285 (atti di: Sciences Perspectives for 3D Spectroscopy, Garching - Germania, 10-14 ottobre 2005) [Contribution to conference proceedings]

Vignali C.; Brandt W.N.; Shemmer O.; Steffen A.; Schneider D.P.; Kaspi S., The Realm of the First Quasars in the Universe: the X-ray View, in: The Central Engine of Active Galactic Nuclei, SAN FRANCISCO, Astronomical Society of the Pacific, 2007, 373, pp. 724 - 725 (atti di: The Central Engine of Active Galactic Nuclei, Xian (Cina), 16-21 ottobre (2006)) [Contribution to conference proceedings]