Zobrazeno 1 - 10
of 321
pro vyhledávání: '"Guainazzi, Matteo"'
Autor:
Meyer, Eileen T., Laha, Sibasish, Shuvo, Onic I., Roychowdhury, Agniva, Green, David A., Rhodes, Lauren, Hankla, Amelia M., Philippov, Alexander, Mbarek, Rostom, laor, Ari, Begelman, Mitchell C., Sadaula, Dev R., Ghosh, Ritesh, Bruni, Gabriele, Panessa, Francesca, Guainazzi, Matteo, Behar, Ehud, Masterson, Megan, Zhang, Haocheng, Yang, Xiaolong, Gurwell, Mark A., Keating, Garrett K., Williams-Baldwin, David, Bray, Justin D., Bempong-Manful, Emmanuel K., Wrigley, Nicholas, Bianchi, Stefano, Ricci, Federica, La Franca, Fabio, Kara, Erin, Georganopoulos, Markos, Oates, Samantha, Nicholl, Matt, Pal, Main, Cenko, S. Bradley
We present multi-frequency (5-345 GHz) and multi-resolution radio observations of 1ES 1927+654, widely considered one of the most unusual and extreme changing-look active galactic nuclei (CL-AGN). The source was first designated a CL-AGN after an opt
Externí odkaz:
http://arxiv.org/abs/2406.18061
Autor:
Xu, Yerong, Pinto, Ciro, Rogantini, Daniele, Barret, Didier, Bianchi, Stefano, Guainazzi, Matteo, Ebrero, Jacobo, Alston, William, Kara, Erin, Cusumano, Giancarlo
The extreme velocities and high ionization states of ultra-fast outflows (UFOs) make them a promising candidate for AGN feedback on the evolution of the host galaxy. However, their exact underlying driving mechanism is not yet fully understood. Given
Externí odkaz:
http://arxiv.org/abs/2405.07494
Autor:
Gudiño, Miriam, Jiménez-Bailón, Elena, Longinotti, Anna Lia, Guainazzi, Matteo, Cerviño, Miguel, Robleto-Orús, Aitor
In accordance with the AGN Unified Model, observed polarization can be related to the orientation of the line of sight with respect to the torus. AGN X-ray emission arises from the central region and carries the imprints of the obscuring material. We
Externí odkaz:
http://arxiv.org/abs/2403.13194
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 525, Issue 4, November 2023, Pages 5080-5104
We present a selection technique to detect Compton-thick (CT) active galactic nuclei (AGNs) in the 3XMM/SDSS-DR7 cross-correlation. A subsample of 3481 X-ray sources that are detected in the hard band (2-8 keV) and have photometric redshifts constitu
Externí odkaz:
http://arxiv.org/abs/2309.14692
The past two decades have witnessed the rapid growth of our knowledge of the X-ray Universe thanks to flagship X-ray space observatories like XMM-Newton and Chandra. A significant portion of discoveries would have been impossible without the X-ray di
Externí odkaz:
http://arxiv.org/abs/2307.01414
Autor:
Raouf, Mojtaba, Viti, Serena, García-Burillo, S., Richings, Alexander J., schaye, Joop, Bemis, Ashley, Nobels, Folkert S. J., Guainazzi, Matteo, Huang, Ko-Yun, Schaller, Matthieu, Impellizzeri, Violette, Holdship, Jon
We present hydrodynamic simulations of the interstellar medium (ISM) within the circumnuclear disk (CND) of a typical AGN-dominated galaxy influenced by mechanical feedback from an active galactic nucleus(AGN). The simulations are coupled with the CH
Externí odkaz:
http://arxiv.org/abs/2306.14573
Autor:
Xu, Yerong, Pinto, Ciro, Rogantini, Daniele, Bianchi, Stefano, Guainazzi, Matteo, Kara, Erin, Jin, Chichuan, CUsumano, Giancarlo
Ultra-fast outflows (UFOs) have been revealed in a large number of active galactic nuclei (AGN) and are regarded as promising candidates for AGN feedback on the host galaxy. The nature and launching mechanism of UFOs are not yet fully understood. Her
Externí odkaz:
http://arxiv.org/abs/2305.11966
Autor:
Osorio-Clavijo, Natalia, González-Martín, Omaira, Sánchez-Sánchez, Sebastián F., Guainazzi, Matteo, Cruz-González, Irene
A complete demographic of active galactic nuclei (AGN) is essential to understand the evolution of the Universe. Optical surveys estimate the population of AGN in the local Universe to be of $\sim$ 4%. However, these results could be biased towards b
Externí odkaz:
http://arxiv.org/abs/2303.18245
Autor:
Güver, Tolga, Özel, Feryal, Marshall, Herman, Psaltis, Dimitrios, Guainazzi, Matteo, Díaz-Trigo, Maria
Many techniques for measuring neutron star radii rely on absolute flux measurements in the X-rays. As a result, one of the fundamental uncertainties in these spectroscopic measurements arises from the absolute flux calibrations of the detectors being
Externí odkaz:
http://hdl.handle.net/10150/621974
http://arizona.openrepository.com/arizona/handle/10150/621974
http://arizona.openrepository.com/arizona/handle/10150/621974
Autor:
De Rosa, Alessandra, Vignali, Cristian, Severgnini, Paola, Bianchi, Stefano, Bogdanović, Tamara, Charisi, Maria, Guainazzi, Matteo, Haiman, Zoltan, Komossa, S., Paragi, Zsolt, Perez-Torres, Miguel, Piconcelli, Enrico, Ducci, Lorenzo, Parvatikar, Manali, Serafinelli, Roberto
We present a study of optically selected dual AGN with projected separations of 3--97~kpc. Using multi-wavelength (MWL) information (optical, X-rays, mid-IR), we characterized the intrinsic nuclear properties of this sample and compared them with tho
Externí odkaz:
http://arxiv.org/abs/2212.05837