Zobrazeno 1 - 10
of 105
pro vyhledávání: '"Nardini, Emanuele"'
Autor:
Martínez-Ramírez, L. N., Rivera, G. Calistro, Lusso, Elisabeta, Bauer, F. E., Nardini, Emanuele, Buchner, Johannes, Brown, Michael J. I., Pineda, Juan C. B., Temple, Matthew J., Banerji, Manda, Stalevski, M., Hennawi, Joseph F.
We present new frontiers in the modelling of the spectral energy distributions (SED) of active galaxies by introducing the radio-to-X-ray fitting capabilities of the publicly available Bayesian code AGNfitter. The new code release, called AGNfitter-r
Externí odkaz:
http://arxiv.org/abs/2405.12111
Autor:
Trefoloni, Bartolomeo, Lusso, Elisabeta, Nardini, Emanuele, Risaliti, Guido, Marconi, Alessandro, Bargiacchi, Giada, Sacchi, Andrea, Signorini, Matilde
A sample of quasars has been recently assembled to investigate the non-linear relation between their monochromatic luminosities at 2500{\AA}, and 2 keV and to exploit quasars as a new class of standardized candles. The use of this technique for cosmo
Externí odkaz:
http://arxiv.org/abs/2404.07205
Autor:
Signorini, Matilde, Risaliti, Guido, Lusso, Elisabeta, Nardini, Emanuele, Bargiacchi, Giada, Sacchi, Andrea, Trefoloni, Bartolomeo
Publikováno v:
A&A 687, A32 (2024)
A characteristic feature of quasars is the observed non-linear relationship between their monochromatic luminosities at rest-frame 2500 {\AA} and 2 keV. This relationship is evident across all redshifts and luminosities and, due to its non-linearity,
Externí odkaz:
http://arxiv.org/abs/2312.08448
Autor:
Pfeifle, Ryan W., Boorman, Peter G., Weaver, Kimberly A., Buchner, Johannes, Civano, Francesca, Madsen, Kristin, Stern, Daniel, Torres-Albà, Núria, Nardini, Emanuele, Ricci, Claudio, Marchesi, Stefano, Ballantyne, D. R., Sicilian, Dominic, Chen, Chien-Ting, Kammoun, Elias, Hickox, Ryan C., García, Javier A., Mallick, Labani
A fundamental goal of modern-day astrophysics is to understand the connection between supermassive black hole (SMBH) growth and galaxy evolution. Merging galaxies offer one of the most dramatic channels for galaxy evolution known, capable of driving
Externí odkaz:
http://arxiv.org/abs/2311.05154
Autor:
Civano, Francesca, Zhao, Xiurui, Boorman, Peter, Marchesi, Stefano, Ananna, Tonima, Creech, Samantha, Chen, Chien-Ting, Hickox, Ryan, Stern, Daniel, Madsen, Kristin, García, Javier A., Silver, Ross, Aird, James, Alexander, David M., Balokovíc, Mislav, Brandt, William N., Buchner, Johannes, Gandhi, Poshak, Kammoun, Elias, LaMassa, Stephanie, Lanzuisi, Giorgio, Merloni, Andrea, Moretti, Alberto, Nandra, Kirpal, Nardini, Emanuele, Pizzetti, Anrealuna, Puccetti, Simonetta, Pfeifle, Ryan, Ricci, Claudio, Spiga, Daniele, Torres-Albá, Nuria, Collaboration, the HEX-P
Since the discovery of the cosmic X-ray background (CXB), astronomers have strived to understand the accreting supermassive black holes (SMBHs) contributing to its peak in the 10-40 keV band. Existing soft X-ray telescopes could study this population
Externí odkaz:
http://arxiv.org/abs/2311.04832
Autor:
Lusso, Elisabeta, Nardini, Emanuele, Fumagalli, Michele, Fossati, Matteo, Battaia, Fabrizio Arrigoni, Revalski, Mitchell, Rafelski, Marc, D'Odorico, Valentina, Peroux, Celine, Cristiani, Stefano, Dayal, Pratika, Haardt, Francesco, Lofthouse, Emma K.
We present the results obtained from follow-up observations of the MUSE Ultra Deep Field (MUDF) at X-ray energies with XMM-Newton. The MUDF is centred on a unique field with two bright, physically associated quasars at $z\simeq3.23$, separated by $\s
Externí odkaz:
http://arxiv.org/abs/2308.12993
Autor:
Signorini, Matilde, Risaliti, Guido, Lusso, Elisabeta, Nardini, Emanuele, Bargiacchi, Giada, Sacchi, Andrea, Trefoloni, Bartolomeo
Publikováno v:
A&A 676, A143 (2023)
Context: A non-linear relation between quasar monochromatic luminosities at 2500A and 2 keV holds at all observed redshifts and luminosities, and it has been used to derive quasar distances and to build a Hubble Diagram of quasars. The choice of the
Externí odkaz:
http://arxiv.org/abs/2306.16438
Autor:
Trefoloni, Bartolomeo, Lusso, Elisabeta, Nardini, Emanuele, Risaliti, Guido, Bargiacchi, Giada, Bisogni, Susanna, Civano, Francesca M., Elvis, Martin, Fabbiano, Giuseppina, Gilli, Roberto, Marconi, Alessandro, Richards, Gordon T., Sacchi, Andrea, Salvestrini, Francesco, Signorini, Matilde, Vignali, Cristian
We present the analysis of the rest frame ultraviolet and optical spectra of 30 bright blue quasars at $z\sim3$, selected to examine the suitability of AGN as cosmological probes. In our previous works, we found an unexpectedly high fraction ($\appro
Externí odkaz:
http://arxiv.org/abs/2305.07699
Autor:
Luminari, Alfredo, Marinucci, Andrea, Bianchi, Stefano, de Marco, Barbara, Feruglio, Chiara, Matt, Giorgio, Middei, Riccardo, Nardini, Emanuele, Piconcelli, Enrico, Puccetti, Simonetta, Tombesi, Francesco
We report on the 2019 XMM-Newton+NuSTAR monitoring campaign of the Seyfert galaxy NGC 2992, observed at one of its highest flux levels in the X-rays. The time-averaged spectra of the two XMM-Newton orbits show Ultra Fast Outflows (UFOs) absorbing str
Externí odkaz:
http://arxiv.org/abs/2305.03754
Autor:
Risaliti, Guido, Lusso, Elisabeta, Nardini, Emanuele, Bargiacchi, Giada, Bisogni, Susanna, Sacchi, Andrea, Signorini, Matilde, Trefoloni, Bartolomeo
Publikováno v:
published in Astronomische Nachrichten, 2023
In the past few years, we built a Hubble diagram of quasars up to redshift z$\sim$7, based on the nonlinear relation between quasars' x-ray and UV luminosities. Such a Hubble diagram shows a >4$\sigma$ deviation from the standard flat $\Lambda$CDM mo
Externí odkaz:
http://arxiv.org/abs/2304.13752