Zobrazeno 1 - 10
of 125
pro vyhledávání: '"Robert Antonucci"'
Autor:
Enrique Lopez-Rodriguez, Makoto Kishimoto, Robert Antonucci, Mitchell C. Begelman, Noemie Globus, Roger Blandford
Publikováno v:
The Astrophysical Journal, Vol 951, Iss 1, p 31 (2023)
The dichotomy between radio-loud (RL) and radio-quiet (RQ) active galactic nuclei (AGNs) is thought to be intrinsically related to radio jet production. This difference may be explained by the presence of a strong magnetic field ( B -field) that enha
Externí odkaz:
https://doaj.org/article/c940572bc28f460fa54394523362b4d7
Autor:
Stefano Bianchi, Marco Chiaberge, Ari Laor, Robert Antonucci, Atharva Bagul, Alessandro Capetti
A previous narrow-slit ($0.1$ arcsec) Hubble Space Telescope observation unveiled a broad relativistic H$\alpha$ profile in NGC3147, a low-luminosity ($\mathrm{L_{bol}}\sim10^{42}$ erg s$^{-1}$), low-Eddington ratio ($\mathrm{L_{bol}/L_{Edd}}\sim10^{
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5becdb52acfc6e0a3280a28ee16a0359
http://arxiv.org/abs/2209.01807
http://arxiv.org/abs/2209.01807
Autor:
Makoto Kishimoto, Matthew Anderson, Theo ten Brummelaar, Christopher Farrington, Robert Antonucci, Sebastian Hönig, Florentin Millour, Konrad R. W. Tristram, Gerd Weigelt, Laszlo Sturmann, Judit Sturmann, Gail Schaefer, Nic Scott
Publikováno v:
The Astrophysical Journal. 940:28
The nuclear region of Type 1 AGNs has only been partially resolved so far in the near-infrared (IR) where we expect to see the dust sublimation region and the nucleus directly without obscuration. Here we present the near-IR interferometric observati
Autor:
Robert Antonucci
Publikováno v:
Nature. 602:390-391
Publikováno v:
Astronomy & Astrophysics. 658:A12
Narrow-line Seyfert 1 (NLS1) galaxies are believed to be active galactic nuclei (AGN) in the early stages of their evolution. Some dozens of them have been found to host relativistic jets, whilst the majority has not even been detected in radio, emph
Autor:
Charles R. Lawrence, Robert Antonucci, Peter Barthel, Martin Haas, Diana M Worrall, Matthew L. N. Ashby, Giovanni G. Fazio, Johannes Buchner, Adam Atanas, Mojegan Azadi, S. P. Willner, Mark Birkinshaw, Jonathan C. McDowell, Patrick Ogle, Belinda Jane Wilkes, Joanna Kuraszkiewicz, R. Chini
Publikováno v:
Astrophysical Journal, 913(2):134. IOP PUBLISHING LTD
Kuraszkiewicz, J, Wilkes, B J, Atanas, A, Buchner, J, McDowell, J C, Willner, S P, Ashby, M L N, Azadi, M, Barthel, P, Haas, M, Worrall, D M, Birkinshaw, M, Antonucci, R, Chini, R, Fazio, G G, Lawrence, C & Ogle, P 2021, ' Beyond Simple AGN Unification with Chandra-observed 3CRR Sources at 0.5 < z < 1 ', Astrophysical Journal, vol. 913, no. 2, 134 . https://doi.org/10.3847/1538-4357/abf3c0
Kuraszkiewicz, J, Wilkes, B J, Atanas, A, Buchner, J, McDowell, J C, Willner, S P, Ashby, M L N, Azadi, M, Barthel, P, Haas, M, Worrall, D M, Birkinshaw, M, Antonucci, R, Chini, R, Fazio, G G, Lawrence, C & Ogle, P 2021, ' Beyond Simple AGN Unification with Chandra-observed 3CRR Sources at 0.5 < z < 1 ', Astrophysical Journal, vol. 913, no. 2, 134 . https://doi.org/10.3847/1538-4357/abf3c0
Low-frequency radio selection finds radio-bright galaxies regardless of the amount of obscuration by gas and dust. We report Chandra observations of a complete 178 MHz–selected, and so orientation-unbiased, sample of 44 0.5 < z < 1 3CRR sources. Th
Autor:
Ari Laor, Loredana Bassani, Francisco J. Carrera, Fabio La Franca, Stefano Bianchi, Alessandro Capetti, Giorgio Matt, Francesca Panessa, R. Middei, Robert Antonucci, Andrea Marinucci, Marco Chiaberge
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
instname
NGC 3147 has been considered the best case of a true type 2 AGN: an unobscured AGN, based on the unabsorbed compact X-ray continuum, which lacks a broad line region (BLR). However, the very low luminosity of NGC 3147 implies a compact BLR, which prod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cf1f5d65f869ee9dd1a4d0265d8bf1e4
http://hdl.handle.net/10261/213182
http://hdl.handle.net/10261/213182
Autor:
Martin Gaskell, Marco Berton, Paola Marziani, Robert Antonucci, Gary Ferland, Edi Bon, N. Bon
Publikováno v:
MARCO BERTON
Proceedings of Revisiting narrow-line Seyfert 1 galaxies and their place in the Universe — PoS(NLS1-2018)
Scopus-Elsevier
Proceedings of Revisiting narrow-line Seyfert 1 galaxies and their place in the Universe — PoS(NLS1-2018)
Scopus-Elsevier
Here we present a critical view of practical problems in the analysis of optical Fe II emission lines of Type 1 AGN spectra. Besides the very complex and unclear physical interpretation of the Fe II template shape, there are other issues that might a
Autor:
Emilia Järvelä, Paolo De Coppi, Marco Berton, Smita Mathur, Alessandro Caccianiga, Robert Antonucci, Sonia Antón, M. Frezzato, Anne Lähteenmäki, Enrico Congiu, Sina Chen, Piero Rafanelli, Stefanie Komossa, F. Di Mille, G. La Mura, Jari Kotilainen, Valentina Cracco, Stefano Ciroi
Narrow-line Seyfert 1 galaxies (NLS1s) are a class of active galactic nuclei (AGN) which are known to be one of the few sources of $\gamma$ rays, which originate in a relativistic beamed jet. Becuase of their relatively large distance, a poorly inves
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::03e44af8822f18cad296be1673d34f09
http://arxiv.org/abs/1807.08953
http://arxiv.org/abs/1807.08953
We report the detection of linearly polarized emission at 53 and 89 $\mu$m, from the radio-loud active galactic nucleus (AGN) Cygnus A using HAWC+ onboard SOFIA. We measure a highly polarized core of $11\pm3$% and $9\pm2$% with a position angle (P.A.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9a9daec737b440e366702888bc179c0c
http://arxiv.org/abs/1806.11114
http://arxiv.org/abs/1806.11114