Zobrazeno 1 - 10
of 284
pro vyhledávání: '"Ballo L"'
Autor:
Bonanomi, F., Cicone, C., Severgnini, P., Braito, V., Vignali, C., Reeves, J. N., Sirressi, M., Arroyave, I. Montoya, Della Ceca, R., Ballo, L., Dotti, M.
Publikováno v:
A&A 673, A46 (2023)
We present ALMA CO(1-0) observations of the nearby LIRG galaxy pair IRAS05054+1718 with a new analysis of X-ray data collected between 2012 and 2021 using NuSTAR, Swift, and XMM-Newton. The western component of the pair, NED01, hosts a Seyfert 1.9 nu
Externí odkaz:
http://arxiv.org/abs/2303.00770
Autor:
Braito, V., Reeves, J. N., Matzeu, G., Severgnini, P., Ballo, L., Cicone, C., Della Ceca, R., Giustini, M., Sirressi, M.
Past X-ray observations of the nearby Seyfert 2 MCG-03-58-007 revealed the presence of a powerful and highly variable disk wind, where two possible phases outflowing with $v_{\rm out1}/c\sim -0.07$ and $v_{\rm out2}/c\sim -0.2$ were observed. Multi-e
Externí odkaz:
http://arxiv.org/abs/2111.04559
Autor:
Severgnini, P., Braito, V., Cicone, C., Saracco, P., Vignali, C., Serafinelli, R., Della Ceca, R., Dotti, M., Cusano, F., Paris, D., Pruto, G., Zaino, A., Ballo, L., Landoni, M.
Publikováno v:
A&A 646, A153 (2021)
Although thousands of galaxy mergers are known, only a handful of sub-kiloparsec-scale supermassive black hole (SMBH) pairs have been confirmed so far, leaving a huge gap between the observed and predicted numbers of such objects. In this work, we pr
Externí odkaz:
http://arxiv.org/abs/2012.09184
Autor:
Braito, V., Reeves, J. N., Severgnini, P., Della Ceca, R., Ballo, L., Cicone, C., Matzeu, G. A., Serafinelli, R., Sirressi, M.
Past Suzaku, XMM and NuSTAR observations of the nearby (z=0.0323) bright Seyfert 2 galaxy MCG-03-58-007 revealed the presence of two deep and blue-shifted Fe K-shell absorption line profiles. These could be explained with the presence of two phases o
Externí odkaz:
http://arxiv.org/abs/2010.14204
Autor:
Matzeu, G. A., Nardini, E., Parker, M. L., Reeves, J. N., Braito, V., Porquet, D., Middei, R., Kammoun, E., Lusso, E., Alston, W. N., Giustini, M., Lobban, A. P., Joyce, A. M., Igo, Z., Ebrero, J., Ballo, L., Santos-Lleó, M., Schartel, N.
We present joint \textit{XMM-Newton} and \textit{NuSTAR} observations of the `bare' narrow line Seyfert 1 Ton S180 ($z=0.062$), carried out in 2016 and providing the first hard X-ray view of this luminous galaxy. We find that the 0.4--30 keV band can
Externí odkaz:
http://arxiv.org/abs/2007.06575
Autor:
Balmaverde, B., Caccianiga, A., Della Ceca, R., Wolter, A., Belfiore, A., Ballo, L., Berton, M., Gioia, I., Maccacaro, T., Sbarufatti, B.
The REX (Radio-Emitting X-ray sources) is a catalogue produced by cross-matching X-ray data from the ROSAT-PSPC archive of pointed observations and radio data from the NRAO VLA Sky Survey, aimed at the selection of blazars. From the REX catalogue, we
Externí odkaz:
http://arxiv.org/abs/1912.07613
Autor:
Ighina, L., Caccianiga, A., Moretti, A., Belladitta, S., Della Ceca, R., Ballo, L., Dallacasa, D.
We present the X-ray analysis of the largest flux-limited complete sample of blazar candidates at z>4 selected from the Cosmic Lens All Sky Survey (CLASS). After obtaining a nearly complete (24/25) X-ray coverage of the sample (from Swift-XRT, XMM-Ne
Externí odkaz:
http://arxiv.org/abs/1908.08084
Autor:
Matzeu, G. A., Braito, V., Reeves, J. N., Severgnini, P., Ballo, L., Caccianiga, A., Campana, S., Cicone, C., Della Ceca, R., Parker, M. L., Santos-Lleó, M., Schartel, N.
We report the results of a detailed analysis of a deep simultaneous $130\,\rm ks$ \textit{XMM-Newton & NuSTAR} observation of the nearby ($z=0.0315$) and bright ($L_{\rm bol}\sim3\times10^{45}\,\rm erg\,s^{-1}$) starburst-AGN Seyfert\,2 system: MCG--
Externí odkaz:
http://arxiv.org/abs/1812.01139
Autor:
Vignali, C., Severgnini, P., Piconcelli, E., Lanzuisi, G., Gilli, R., Mignoli, M., Comastri, A., Ballo, L., Iwasawa, K., La Parola, V.
Publikováno v:
A&A 619, A16 (2018)
The search for heavily obscured active galactic nuclei (AGNs) has been revitalized in the last five years by NuSTAR, which has provided a good census and spectral characterization of a population of such objects, mostly at low redshift, thanks to its
Externí odkaz:
http://arxiv.org/abs/1809.05107
Autor:
Braito, V., Reeves, J. N., Matzeu, G. A., Severgnini, P., Ballo, L., Caccianiga, A., Campana, S., Cicone, C., Della Ceca, R., Turner, T. J.
We present the discovery of a new candidate for a fast disk wind, in the nearby Seyfert 2 galaxy MCG-03-58-007. This wind is discovered in a deep Suzaku observation that was performed in 2010. Overall the X-ray spectrum of MCG-03-58-007 is highly abs
Externí odkaz:
http://arxiv.org/abs/1807.00548