Zobrazeno 1 - 10
of 230
pro vyhledávání: '"Sbarrato T"'
Autor:
Wolf, J., Salvato, M., Belladitta, S., Arcodia, R., Ciroi, S., Di Mille, F., Sbarrato, T., Buchner, J., Hämmerich, S., Wilms, J., Collmar, W., Dwelly, T., Merloni, A., Urrutia, T., Nandra, K.
Publikováno v:
A&A 691, A30 (2024)
The SRG/eROSITA All-Sky Survey (eRASS) is expected to contain ~100 quasars that emitted their light when the universe was less than a billion years old, i.e. at z>5.6. By selection, these quasars populate the bright end of the AGN X-ray luminosity fu
Externí odkaz:
http://arxiv.org/abs/2406.05118
Autor:
Ferro, M., Brivio, R., D'Avanzo, P., Rossi, A., Izzo, L., Campana, S., Christensen, L., Dinatolo, M., Hussein, S., Levan, A. J., Melandri, A., Bernardini, M. G., Covino, S., D'Elia, V., Della Valle, M., De Pasquale, M., Gompertz, B. P., Hartmann, D., Heintz, K. E., Jakobsson, P., Kouveliotou, C., Malesani, D. B., Martin-Carrillo, A., Nava, L., Guelbenzu, A. Nicuesa, Pugliese, G., Salvaggio, C., Salvaterra, R., Savaglio, S., Sbarrato, T., Tanvir, N. R., Wijers, R. A. M. J., Zafar, T.
Publikováno v:
A&A 678, A142 (2023)
Context: GRB 211106A and GRB 211227A are recent gamma-ray bursts (GRBs) with initial X-ray positions suggesting associations with nearby galaxies (z < 0.7). Their prompt emission characteristics indicate GRB 211106A is a short-duration GRB and GRB 21
Externí odkaz:
http://arxiv.org/abs/2309.03000
Autor:
Kappes, A., Burd, P. R., Kadler, M., Ghisellini, G., Bonnassieux, E., Perucho, M., Brüggen, M., Cheung, C. C., Ciardi, B., Gallo, E., Haardt, F., Morabito, L. K., Sbarrato, T., Drabent, A., Harwood, J., Jackson, N., Moldon, J.
Publikováno v:
A&A 663, A44 (2022)
Studies of the most distant AGNs allow us to test our current understanding of the physics present in radio-jetted AGNs across a range of environments. The decrease in apparent luminosity with distance is the primary difficulty to overcome in the stu
Externí odkaz:
http://arxiv.org/abs/2205.11288
Autor:
Krezinger, M., Perger, K., Gabányi, K. É., Frey, S., Gurvits, L. I, Paragi, Zs., An, T., Zhang, Y., Cao, H., Sbarrato, T.
High-redshift radio sources provide plentiful opportunities for studying the formation and evolution of early galaxies and supermassive black holes. However, the number of known radio-loud active galactic nuclei (AGN) above redshift 4 is rather limit
Externí odkaz:
http://arxiv.org/abs/2204.02114
Autor:
Ighina, L., Moretti, A., Tavecchio, F., Caccianiga, A., Belladitta, S., Dallacasa, D., Della Ceca, R., Sbarrato, T., Spingola, C.
Publikováno v:
A&A 659, A93 (2022)
We report on the direct observation of an extended X-ray jet in the $z$=6.1 radio-loud Active Galactic Nucleus PSO J030947.49+271757.31 from a deep Chandra X-ray observation (128 ksec). This detection represents the most distant kpc off-nuclear emiss
Externí odkaz:
http://arxiv.org/abs/2111.08632
Autor:
Belladitta, S., Moretti, A., Caccianiga, A., Spingola, C., Severgnini, P., Della Ceca, R., Ghisellini, G., Dallacasa, D., Sbarrato, T., Cicone, C., Cassarà, L. P., Pedani, M.
Publikováno v:
A&A 635, L7 (2020)
We present the discovery of PSO J030947.49+271757.31, the radio brightest (23.7 mJy at 1.4 GHz) active galactic nucleus (AGN) at z>6.0. It was selected by cross-matching the NRAO VLA Sky Survey and the Panoramic Survey Telescope and Rapid Response Sy
Externí odkaz:
http://arxiv.org/abs/2002.05178
Autor:
Baloković M., Ajello M., Blandford R. D., Boggs S. E., Borracci F., Chiang J., Christensen F. E., Craig W. W., Forster K., Furniss A., Fürst F., Ghisellini G., Giebels B., Giommi P., Grefenstette B. W., Hailey C. J., Harrison F. A., Hayashida M., Humensky B., Inoue Y., Koglin J. E., Krawczynski H., Madejski G. M., Madsen K. K., Meier D. L., Nelson T., Ogle P., Paneque D., Perri M., Puccetti S., Reynolds C. S., Sbarrato T., Stern D., Tagliaferri G., Urry C. M., Wehrle A. E., Zhang W. W.
Publikováno v:
EPJ Web of Conferences, Vol 61, p 04013 (2013)
Mkn 421 is a nearby active galactic nucleus dominated at all wavelengths by a very broad nonthermal continuum thought to arise from a relativistic jet seen at a small angle to the line of sight. Its spectral energy distribution peaks in the X-ray and
Externí odkaz:
https://doaj.org/article/45522e9c5586453f8fb7581303570333
Akademický článek
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Autor:
Belladitta, S., Moretti, A., Caccianiga, A., Ghisellini, G., Cicone, C., Sbarrato, T., Ighina, L., Pedani, M.
Publikováno v:
A&A 629, A68 (2019)
We present the discovery and properties of DESJ014132.4-542749.9 (DES0141-54), a new powerful radio-loud active galactic nucleus (AGN) in the early Universe (z=5.0). It was discovered by cross-matching the first data release of the Dark Energy Survey
Externí odkaz:
http://arxiv.org/abs/1908.08552
Autor:
Ghisellini, G., Perri, M. L., Costamante, G., Tagliaferri, G., Sbarrato, T., Campitiello, S., Madejski, G., Tavecchio, F., Ghirlanda, G.
We observed with the NuSTAR satellite 3 blazars at z>2, detected in gamma-rays by Fermi/LAT and in the soft X-rays, but not yet observed above 10 keV. The flux and slope of their X-ray continuum, together with Fermi/LAT data allows us to estimate the
Externí odkaz:
http://arxiv.org/abs/1906.02955