Zobrazeno 1 - 10
of 259
pro vyhledávání: '"Tozzi Paolo"'
Autor:
Grishin, Kirill A., Mei, Simona, Chilingarian, Igor V., Lepore, Marika, Tozzi, Paolo, Gonzalez, Anthony, Hatch, Nina, Stanford, Spencer A., Wylezalek, Dominika
Galaxy clusters, being the largest gravitationally bound structures in the Universe, are a powerful tool to study mass assembly at different epochs. At z$>$2 they give an unique opportunity to put solid constraints not only on dark matter halo growth
Externí odkaz:
http://arxiv.org/abs/2409.02168
Autor:
Vito, Fabio, Brandt, William N., Comastri, Andrea, Gilli, Roberto, Ivison, Rob J., Lanzuisi, Giorgio, Lehmer, Bret D., Lopez, Ivan E., Tozzi, Paolo, Vignali, Cristian
Publikováno v:
A&A 689, A130 (2024)
Protoclusters at $z>2$ are gas-rich regions characterized by high star-formation activity. The same physical properties that enhance star formation in protoclusters are also thought to boost the growth of SMBHs. We aim to test this scenario by probin
Externí odkaz:
http://arxiv.org/abs/2406.13005
Autor:
D'Addona, Maurizio, Mercurio, Amata, Rosati, Piero, Grillo, Claudio, Caminha, Gabriel, Acebron, Ana, Angora, Giuseppe, Bergamini, Pietro, Bozza, Valerio, Granata, Giovanni, Annunziatella, Marianna, Gargiulo, Adriana, Gobat, Raphael, Tozzi, Paolo, Girardi, Marisa, Lombardi, Marco, Meneghetti, Massimo, Schipani, Pietro, Tortorelli, Luca, Vanzella, Eros
Publikováno v:
A&A Volume 686, June 2024, A4
We present a new high-precision strong lensing model of PLCK G287.0$+$32.9, a massive lens galaxy cluster at $z=0.383$, with the aim to get an accurate estimation of its effective Einstein radius and total mass distribution. We also present a spectro
Externí odkaz:
http://arxiv.org/abs/2401.16473
Overdense regions at high redshift ($z \gtrsim 2$) are perfect laboratories to study the relations between environment and SMBH growth, and the AGN feedback processes on the surrounding galaxies and diffuse gas. In this white paper, we discuss how AX
Externí odkaz:
http://arxiv.org/abs/2311.08466
Autor:
Signorini, Matilde, Marchesi, Stefano, Gilli, Roberto, Brusa, Marcella, Comastri, Andrea, D'Amato, Quirino, Iwasawa, Kazushi, Lanzuisi, Giorgio, Mazzolari, Giovanni, Mignoli, Marco, Peca, Alessandro, Prandoni, Isabella, Tozzi, Paolo, Vignali, Cristian, Vito, Fabio, Norman, Colin
Publikováno v:
A&A 676, A49 (2023)
The 500ks Chandra ACIS-I observation of the field around the $z=6.31$ quasar SDSS J1030+0524 is currently the 5th deepest extragalactic X-ray survey. The rich multi-band coverage of the field allowed for an effective identification and redshift deter
Externí odkaz:
http://arxiv.org/abs/2305.13368
Powerful winds at accretion-disk scales have been observed in the past 20 years in many AGN. These are the so-called ultrafast outflows (UFOs). Outflows are intimately related to mass accretion through the conservation of angular momentum, and they a
Externí odkaz:
http://arxiv.org/abs/2304.12696
Publikováno v:
A&A 674, A102 (2023)
We investigate the properties of cool cores in an optimally selected sample of 37 massive and X-ray-bright galaxy clusters, with regular morphologies, observed with Chandra. We measured the density, temperature, and abundance radial profiles of their
Externí odkaz:
http://arxiv.org/abs/2304.08810
Autor:
Di Mascolo, Luca, Saro, Alexandro, Mroczkowski, Tony, Borgani, Stefano, Churazov, Eugene, Rasia, Elena, Tozzi, Paolo, Dannerbauer, Helmut, Basu, Kaustuv, Carilli, Christopher L., Ginolfi, Michele, Miley, George, Nonino, Mario, Pentericci, Maurilio Pannella Laura, Rizzo, Francesca
Galaxy clusters are the most massive gravitationally bound structures in the Universe, comprising thousands of galaxies and pervaded by a diffuse, hot ``intracluster medium'' (ICM) that dominates the baryonic content of these systems. The formation a
Externí odkaz:
http://arxiv.org/abs/2303.16226
Autor:
Marchesi, Stefano, Mignoli, Marco, Gilli, Roberto, Mazzolari, Giovanni, Signorini, Matilde, Brienza, Marisa, Bisogni, Susanna, Bolzonella, Micol, Cucciati, Olga, D'Amato, Quirino, Peca, Alessandro, Prandoni, Isabella, Tozzi, Paolo, Vignali, Cristian, Vito, Fabio, Comastri, Andrea
Publikováno v:
A&A 673, A97 (2023)
We present the results of a spectroscopic campaign with the Multi-Object Double Spectrograph (MODS) instrument mounted on the Large Binocular Telescope (LBT), aimed at obtaining a spectroscopic redshift for seven Chandra J1030 sources with a photomet
Externí odkaz:
http://arxiv.org/abs/2303.13575
Autor:
Yu, Li-Ming, Luo, Bin, Brandt, William N., Bauer, Franz E., De Cicco, Demetra, Fabian, Andy C., Gilli, Roberto, Koekemoer, Anton M., Paolillo, Maurizio, Schneider, Donald P., Shemmer, Ohad, Tozzi, Paolo, Trump, Jonathan R., Vignali, Cristian, Vito, Fabio, Wang, Jun-Xian, Xue, Yongquan
We investigate the extreme X-ray variability of a z = 1.608 active galactic nucleus in the 7 Ms Chandra Deep Field-South (XID 403), which showed two significant X-ray brightening events. In the first event, XID 403 brightened by a factor of $>2.5$ in
Externí odkaz:
http://arxiv.org/abs/2303.03438