Zobrazeno 1 - 10
of 493
pro vyhledávání: '"Panessa, F."'
Powerful supermassive black hole (SMBH) winds in the form of ultra-fast outflows (UFOs) are detected in the X-ray spectra of several active galactic nuclei (AGN) seemingly independently of their radio classification between radio quiet (RQ) and radio
Externí odkaz:
http://arxiv.org/abs/2407.00393
Autor:
Gianolli, V. E., Bianchi, S., Petrucci, P-O, Brusa, M., Chartas, G., Lanzuisi, G., Matzeu, G. A., Parra, M., Ursini, F., Behar, E., Bischetti, M., Comastri, A., Costantini, E., Cresci, G., Dadina, M., De Marco, B., De Rosa, A., Fiore, F., Gaspari, M., Gilli, R., Giustini, M., Guainazzi, M., King, A. R., Kraemer, S., Kriss, G., Krongold, Y., La Franca, F., Longinotti, A. L., Luminari, A., Maiolino, R., Marconi, A., Mathur, S., Matt, G., Mehdipour, M., Merloni, A., Middei, R., Miniutti, G., Nardini, E., Panessa, F., Perna, M., Piconcelli, E., Ponti, G., Ricci, F., Serafinelli, R., Tombesi, F., Vignali, C., Zappacosta, L.
The detection of blue-shifted absorption lines likely associated with ionized Iron K-shell transitions in the X-ray spectra of many Active Galactic Nuclei (AGN) suggests the presence of a highly ionized gas outflowing with mildly relativistic velocit
Externí odkaz:
http://arxiv.org/abs/2403.09538
Publikováno v:
A&A 682, A25 (2024)
Masers are a unique tool to investigate the emitting gas in the innermost regions of AGNs and to map accretion disks and tori orbiting around supermassive black holes. IC485, which is classified as a LINER or Seyfert galaxy, hosts a bright water mase
Externí odkaz:
http://arxiv.org/abs/2310.08998
Autor:
Trudu, M., Pilia, M., Nicastro, L., Guidorzi, C., Orlandini, M., Zampieri, L., Marthi, V. R., Ambrosino, F., Possenti, A., Burgay, M., Casentini, C., Mereminskiy, I., Savchenko, V., Palazzi, E., Panessa, F., Ridolfi, A., Verrecchia, F., Anedda, M., Bernardi, G., Bachetti, M., Burenin, R., Burtovoi, A., Casella, P., Fiori, M., Frontera, F., Gajjar, V., Gardini, A., Ge, M., Guijarro-Román, A., Ghedina, A., Hermelo, I., Jia, S., Li, C., Liao, J., Li, X., Lu, F., Lutivinov, A., Naletto, G., Ochener, P., Papitto, A., Perri, M., Pittori, C., Safanov, B., Semena, A., Strakhov, I., Tavani, M., Ursi, A., Xiong, S. L., Zhang, S. N., Zheltoukhov, S.
Publikováno v:
A&A 676, A17 (2023)
Aims. Fast Radio Bursts are bright radio transients whose origin has not yet explained. The search for a multi-wavelength counterpart of those events can put a tight constrain on the emission mechanism and the progenitor source. Methods. We conducted
Externí odkaz:
http://arxiv.org/abs/2305.18628
Autor:
Hernández-García, L., Panessa, F., Bruni, G., Bassani, L., Arévalo, P., Patiño-Alvarez, V. M., Tramacere, A., Lira, P., Sánchez-Sáez, P., Bauer, F. E., Chavushyan, V., Carraro, R., Förster, F., Arancibia, A. M. Muñoz, Ubertini, P.
PBC J2333.9-2343 is a giant radio galaxy at z = 0.047 with a bright central core associated to a blazar nucleus. If the nuclear blazar jet is a new phase of the jet activity, then the small orientation angle suggest a dramatic change of the jet direc
Externí odkaz:
http://arxiv.org/abs/2303.08842
Autor:
Matzeu, G. A., Brusa, M., Lanzuisi, G., Dadina, M., Bianchi, S., Kriss, G., Mehdipour, M., Nardini, E., Chartas, G., Middei, R., Piconcelli, E., Gianolli, V., Comastri, A., Longinotti, A. L., Krongold, Y., Ricci, F., Petrucci, P. O., Tombesi, F., Luminari, A., Zappacosta, L., Miniutti, G., Gaspari, M., Behar, E., Bischetti, M., Mathur, S., Perna, M., Giustini, M., Grandi, P., Torresi, E., Vignali, C., Bruni, G., Cappi, M., Costantini, E., Cresci, G., De Marco, B., De Rosa, A., Gilli, R., Guainazzi, M., Kaastra, J., Kraemer, S., La Franca, F., Marconi, A., Panessa, F., Ponti, G., Proga, D., Ursini, F., Fiore, F., King, A. R., Maiolino, R., Matt, G., Merloni, A.
We present a new X-ray spectroscopic study of $22$ luminous ($2\times10^{45}\lesssim L_{\rm bol}\rm /erg\,s^{-1} \lesssim 2\times10^{46}$) active galactic nuclei (AGNs) at intermediate-redshift ($0.1 \lesssim z \lesssim 0.4$), as part of the SUpermas
Externí odkaz:
http://arxiv.org/abs/2212.02960
Autor:
Bruni, G., Bassani, L., Persic, M., Rephaeli, Y., Malizia, A., Molina, M., Fiocchi, M., Ricci, R., Wieringa, M. H., Giroletti, M., Panessa, F., Bazzano, A., Ubertini, P.
The advent of new all-sky radio surveys such as the VLA Sky Survey (VLASS) and the Rapid ASKAP Continuum Survey (RACS), performed with the latest generation radio telescopes, is opening new possibilities on the classification and study of extragalact
Externí odkaz:
http://arxiv.org/abs/2203.01450
Autor:
Williams, D. R. A., Pahari, M., Baldi, R. D., McHardy, I. M., Mathur, S., Beswick, R. J., Beri, A., Boorman, P., Aalto, S., Alberdi, A., Argo, M. K., Dullo, B. T., Fenech, D. M., Green, D. A., Knapen, J. H., Martí-Vidal, I., Moldon, J., Mundell, C. G., Muxlow, T. W. B., Panessa, F., Pérez-Torres, M., Saikia, P., Shankar, F., Stevens, I. R., Uttley, P.
All 280 of the statistically-complete Palomar sample of nearby (<120 Mpc) galaxies dec > 20 degrees have been observed at 1.5 GHz as part of the LeMMINGs e-MERLIN legacy survey. Here, we present Chandra X-ray observations of the nuclei of 213 of thes
Externí odkaz:
http://arxiv.org/abs/2111.09077
Autor:
Baldi, R. D., Williams, D. R. A., Beswick, R. J., McHardy, I., Dullo, B. T., Knapen, J. H., Zanisi, L., Argo, M. K., Aalto, S., Alberdi, A., Baan, W. A., Bendo, G. J., Fenech, D. M., Green, D. A., Klöckner, H. -R., Körding, E., Maccarone, T. J., Marcaide, J. M., Mutie, I., Panessa, F., Pérez-Torres, M. A., Romero-Cañizales, C., Saikia, D. J., Saikia, P., Shankar, F., Spencer, R. E., Stevens, I. R., Uttley, P., Brinks, E., Corbel, S., Martí-Vidal, I., Mundell, C. G., Pahari, M., Ward, M. J.
What determines the nuclear radio emission in local galaxies? We combine optical [O III] line emission, robust black hole (BH) mass estimates, and high-resolution e-MERLIN 1.5-GHz data, from the LeMMINGs survey, of a statistically-complete sample of
Externí odkaz:
http://arxiv.org/abs/2109.06205
The origin of the radio emission in radio-quiet quasars (RQQs) remains unclear. Radio emission may be produced by a scaled-down version of the relativistic jets observed in radio-loud (RL) AGN, an AGN-driven wind, the accretion disc corona, AGN photo
Externí odkaz:
http://arxiv.org/abs/2107.14490