Results 61 to 70 of about 23,483 (205)

The XMM-Newton Wide-Field Survey in the COSMOS field (XMM-COSMOS): demography and multiwavelength properties of obscured and unobscured luminous AGN [PDF]

, 2010
We report the final optical identifications of the medium-depth (~60 ksec), contiguous (2 deg^2) XMM-Newton survey of the COSMOS field. XMM-Newton has detected ~800 X-ray sources down to limiting fluxes of ~5x10^{-16}, ~3x10^{-15}, and ~7x10^{-15} erg ...
Aldcroft, T., Aussel, H., Bardelli, S., Bolzonella, M., Bongiorno, A., Brun, V. Le, Brusa, M., Capak, P., Cappelluti, N., Cappi, A., Caputi, K., Civano, F., Comastri, A., Contini, T., de la Torre, S., de Ravel, L., Elvis, M., Fevre, O. Le, Finoguenov, A., Fiore, F., Floc'h, E. Le, Fruscione, A., Garilli, B., Gilli, R., Hao, H., Hasinger, G., Ilbert, O., Impey, C. D., Iovino, A., Iwasawa, K., Jahnke, K., Kampczyk, P., Kartaltepe, J., Kneib, J. P., Knobel, C., Koekemoer, A. M., Kovac, K., Lamareille, F., Leborgne, J-F., Lilly, S. J., Lusso, E., Maier, C., Mainieri, V., McCracken, H. J., Merloni, A., Mignoli, M., Miyaji, T., Pello, R., Peng, Y-J, Perez-Montero, E., Salvato, M., Sanders, D., Schinnerer, E., Scodeggio, M., Scoville, N. Z., Silverman, J. D., Tanaka, M., Taniguchi, Y., Tasca, L., Treister, E., Tresse, L., Trump, J. D., Vergani, D., Vignali, C., Zamojski, M., Zamorani, G., Zucca, E.   +66 more
core   +6 more sources

Observing Supermassive Black Holes across cosmic time: from phenomenology to physics

, 2015
In the last decade, a combination of high sensitivity, high spatial resolution observations and of coordinated multi-wavelength surveys has revolutionized our view of extra-galactic black hole (BH) astrophysics.
A. Akylas, A. Bongiorno, A. Cattaneo, A. Comastri, A. Lawrence, A. Lawrence, A. Lawrence, A. Lawrence, A. Marconi, A. Merloni, A. Merloni, A. Merloni, A. Merloni, A. Merloni, A. Merloni, A. Merloni, A. Sesana, A. Soltan, A.A. Galeev, A.C. Fabian, A.C. Fabian, A.T. Steffen, A.T. Steffen, B. Chen, B.J. Sams, B.R. McNamara, C. Done, C. Jin, C. Simpson, C.D. Dermer, C.D.P. Lagos, C.J. Willott, C.J. Willott, C.M. Urry, D. Burlon, D.A. Rafferty, E. Lusso, E. Lusso, E. Treister, E. Treister, E. Treister, E. Treister, E.S. Perlman, F. Fiore, F. Franca La, F. Haardt, F. Hamann, F. Shankar, F. Vito, F. Özel, G. Ghisellini, G. Hasinger, G. Hasinger, G. Matt, G. Risaliti, G. Risaliti, G. Setti, G.H. Rieke, G.L. Granato, G.T. Richards, H. Falcke, H. Hao, H. Netzer, H. Netzer, I. Delvecchio, I. Georgantopoulos, I. Hubeny, I. Pâris, I.G. Roseboom, I.M. George, J. Buchner, J. Fritz, J. Goodman, J. Kormendy, J.-M. Wang, J.D. Schnittman, J.E. McClintock, J.H. Mayo, J.J. Condon, J.S. Dunlop, J.V. Wall, K. Iwasawa, K. Iwasawa, K. Nandra, K. Ohsuga, K.E. Whitaker, K.R.W. Tristram, K.W. Cavagnolo, L. Bîrzan, L. Danese, L.C. Ho, M. Brightman, M. Brightman, M. Brightman, M. Brusa, M. Dijkstra, M. Elitzur, M. Elvis, M. Elvis, M. Elvis, M. Gilfanov, M. Gilfanov, M. Kishimoto, M. Kishimoto, M. Kishimoto, M. Kishimoto, M. Lacy, M. Massardi, M. Nenkova, M. Schmidt, M. Volonteri, M. Volonteri, M. Young, M.A. Worsley, M.J. Hardcastle, M.S. Longair, N.I. Shakura, P. Padovani, P. Ranalli, P. Tozzi, P.F. Hopkins, P.N. Best, P.W. Guilbert, Q. Yu, R. Antonucci, R. Barvainis, R. Giacconi, R. Gilli, R. Maiolino, R. Maiolino, R. Maiolino, R. Narayan, R.A. Sunyaev, R.A. Sunyaev, R.C. Hickox, R.D. Blandford, R.H. Becker, R.J. Assef, R.J. Assef, R.P. Fender, R.R.J. Antonucci, R.S. Nemmen, S. Bianchi, S. Heinz, S. Heinz, S. Heinz, S. Kaspi, S. Sazonov, S.M. Croom, S.W. Allen, S.W. Davis, T.A. Boroson, V. Smolčić, X. Dai, Y. Juarez, Y. Ueda, Y. Ueda, Y.-F. Jiang, Z. Shang   +158 more
core   +1 more source

Faint progenitors of luminous z ∼ 6 quasars: Why do not we see them? [PDF]

, 2016
Observational searches for faint active nuclei at z > 6 have been extremely elusive, with a few candidates whose high-z nature is still to be confirmed.
Gallerani, Simona, Orofino, Maria C., PEZZULLI, EDWIGE, Sbarrato, Tullia, SCHNEIDER, Raffaella, Valiante, Rosa   +5 more
core   +2 more sources

I mercati emergenti come sbocco per l'offerta di beni di lusso [PDF]

, 2014
Questo articolo si concentra sui mercati emergenti e sul loro rapporto con il mercato dei beni di lusso. Ciascuna economia emergente ha caratteristiche peculiari che rendono il proprio mercato più o meno appetibile per l'investitore estero.
BELLANTE, Filippa, LUPO, Giovanni Maria, Spallino, Myriam   +2 more
core  

Multiwavelength analysis as a probe of accretion and radiative processes in LINERs

, 2012
We study the multiwavelength properties of an optically selected sample of Low Ionization Nuclear Emission-line Regions (LINERs), in an attempt to determine the accretion mechanism powering their central engine.
Porquet, Delphine, Younes, George
core   +2 more sources

Evidence for ultra-fast outflows in radio-quiet AGNs: III - location and energetics [PDF]

, 2012
Using the results of a previous X-ray photo-ionization modelling of blue-shifted Fe K absorption lines on a sample of 42 local radio-quiet AGNs observed with XMM-Newton, in this letter we estimate the location and energetics of the associated ultra-fast ...
Asplund, Bentz, Bian, Blustin, Braito, Cappi, Chartas, Chartas, Dadina, Davis, Di, Elvis, Elvis, F. Tombesi, Gaspari, Gaspari, Ghisellini, Giustini, Hopkins, Hopkins, J. N. Reeves, King, King, Krongold, Lusso, M. Cappi, Markowitz, Markowitz, McKernan, Miller, Nemmen, Novikov, Ohsuga, Onken, Ostriker, Peterson, Pounds, Pounds, Proga, Reeves, Scannapieco, Silk, Sim, Soltan, Sternberg, Tarter, Tombesi, Tombesi, Tombesi, Tombesi, V. Braito, Vasudevan, Wandel, Wang, Wang   +54 more
core   +3 more sources

Da Brodovitch al Gucci Style

Aisthema: International Journal, 2021
Il saggio intende offrire alcuni spunti di riflessione a partire dalla questione dello stile applicata alla moda e all’immaginario contemporaneo. Facendo riferimento ad alcuni contributi teorici e sociologici celebri come quelli di John Clark e Pierre ...
Alessandro Alfieri
doaj  

Le fondazioni culturali delle corporate del lusso. Collezioni d’arte aziendali, mecenatismo e sponsorizzazione

ZoneModa Journal, 2018
At the heart of the growing entrepreneurial partnership between luxury brands and the art business, we can see a structural closeness of two realities that today are more than ever in a winning conjunction for the spread of culture.
Sara Mazzotta
doaj   +1 more source

The Physical Relation between Disc and Coronal Emission in Quasars

Frontiers in Astronomy and Space Sciences, 2018
We propose a modified version of the observed non-linear relation between the X-ray (2 keV) and the ultraviolet (2,500 Å) emission in quasars (i.e., LX∝LUVγ) which involves the full width at half-maximum, FWHM, of the broad emission line, i.e., LX∝LUVγ ...
Elisabeta Lusso, Guido Risaliti, Guido Risaliti   +2 more
doaj   +1 more source

The X-ray luminosity function of Active Galactic Nuclei in the redshift interval z=3-5

, 2015
We combine deep X-ray survey data from the Chandra observatory and the wide-area/shallow XMM-XXL field to estimate the AGN X-ray luminosity function in the redshift range z=3-5.
Aird, J., Brandt, W. N., Buchner, J., Dwelly, T., Georgakakis, A., Georgantopoulos, I., Hsu, L. -T., Koki, K., Liu, Z., McGreer, I. D., Menzel, M. -L., Merloni, A., Mountrichas, G., Nandra, K., Ross, N. P., Salvato, M.   +15 more
core   +1 more source