Zobrazeno 1 - 10
of 2 236
pro vyhledávání: '"Díaz, Y."'
Autor:
Jana, A., Ricci, C., Temple, M. J., Chang, H. -K., Shablovinskaya, E., Trakhtenbrot, B., Diaz, Y., Ilic, D., Nandi, P., Koss, M.
Changing-look active galactic nuclei (CLAGNs) show the appearance and disappearance of broad emission lines in their UV/optical spectra on timescales of months to decades. Here, we investigate how CL transitions depend on several AGN parameters such
Externí odkaz:
http://arxiv.org/abs/2411.08676
Autor:
Bierschenk, M., Ricci, C., Temple, M. J., Satyapal, S., Cann, J., Xie, Y., Diaz, Y., Ichikawa, K., Koss, M. J., Bauer, F. E., Rojas, A., Kakkad, D., Tortosa, A., Ricci, F., Mushotzky, R., Kawamuro, T., Gupta, K. K., Trakhtenbrot, B., Chang, C. S., Riffel, R., Oh, K., Harrison, F., Powell, M., Stern, D., Urry, C. M.
We analyze the Spitzer spectra of 140 active galactic nuclei (AGN) detected in the hard X-rays (14-195 keV) by the Burst Alert Telescope (BAT) on board Swift. This sample allows us to probe several orders of magnitude in black hole masses ($10^6-10^9
Externí odkaz:
http://arxiv.org/abs/2409.17334
Autor:
da Silva, Patrícia, Menezes, R. B., Díaz, Y., Rodríguez-Ardila, A., López-Navas, E., Arévalo, P., Hernández-García, L.
The central regions of galaxies harbouring active galactic nuclei (AGNs) can be quite complex, especially at high activity, presenting, besides variability, a variety of phenomena related, e.g. to ionization/excitation mechanisms. A detailed study is
Externí odkaz:
http://arxiv.org/abs/2212.11434
Autor:
Díaz, Y., Hernández-García, L., Arévalo, P., López-Navas, E., Ricci, C., Koss, M., González-Martín, O., Baloković, M., Osorio-Clavijo, N., García, J., Malizia, A.
Publikováno v:
A&A 669, A114 (2023)
An interesting feature in active galactic nuclei (AGN) accreting at low rate is the weakness of the reflection features in their X-ray spectra, which can result from the gradual disappearance of the torus with decreasing accretion rates. It has been
Externí odkaz:
http://arxiv.org/abs/2210.15376
The detailed study of nuclear regions of galaxies is important because it can help understanding the active galactic nucleus (AGN) feedback mechanisms, the connections between the nuclei and their host galaxies, and ultimately the galaxy formation pr
Externí odkaz:
http://arxiv.org/abs/2105.09420
Autor:
Delgado, S., Remedios-Díaz, Y., Calderón, J.C., Díaz-Coello, S., Arévalo, M.C., García, G., Pastor, E.
Publikováno v:
In International Journal of Hydrogen Energy 15 February 2024 55:1050-1061
Autor:
Diaz, Y., Arévalo, P., Hernández-García, L., Bassani, L., Malizia, A., González-Martín, O., Ricci, C., Matt, G., Stern, D., May, D., Zezas, A., Bauer, F. E.
One distinctive feature of low-luminosity active galactic nuclei (LLAGN) is the relatively weak reflection features they may display in the X-ray spectrum, which can result from the disappearance of the torus with decreasing accretion rates. Some mat
Externí odkaz:
http://arxiv.org/abs/2006.09463
Autor:
Hernández-García, L., Panessa, F., Bassani, L., Bruni, G., Ursini, F., Chavushyan, V., González-Martín, O., Cazzoli, S., Jiménez-Andrade, E. F., Arévalo, P., Díaz, Y., Bazzano, A., Ubertini, P.
Mrk 1498 is part of a sample of galaxies with extended emission line regions (extended outwards up to a distance of $\sim$7 kpc) suggested to be photo-ionized by an AGN that has faded away or that is still active but heavily absorbed. Interestingly,
Externí odkaz:
http://arxiv.org/abs/1908.06080
Autor:
Morera-Díaz, Y., Canaán-Haden, C., Sánchez-Ramírez, J., Bequet-Romero, M., Gonzalez-Moya, I., Martínez, R., Falcón, V., Palenzuela, D., Ayala-Ávila, M., Gavilondo, J.V.
Publikováno v:
In Cancer Letters 1 May 2023 561
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.