Zobrazeno 1 - 10
of 49
pro vyhledávání: '"LA MURA, Giovanni"'
Autor:
Chen, Sina, Kharb, Preeti, Sasikumar, Silpa, Nandi, Sumana, Berton, Marco, Jarvela, Emilia, Laor, Ari, Behar, Ehud, Foschini, Luigi, Vietri, Amelia, Gu, Minfeng, La Mura, Giovanni, Crepaldi, Luca, Zhou, Minhua
We present new 1.5-8.5 GHz Very Long Baseline Array (VLBA) observations and 0.32-1.26 GHz Giant Meterwave Radio Telescope (GMRT) observations of J0354-1340, which is the only known radio-quiet (RQ) or radio-intermediate (RI) narrow-line Seyfert 1 gal
Externí odkaz:
http://arxiv.org/abs/2312.13351
Autor:
Barba, Benedetta Dalla, Berton, Marco, Foschini, Luigi, La Mura, Giovanni, Vietri, Amelia, Ciroi, Stefano
We present preliminary results of the analysis of optical spectra of two complementary samples of Seyfert galaxies. The first sample was extracted from a selection of the 4th Fermi Gamma-ray Large Area Telescope (4FGL) catalog, and consists of 9 $\ga
Externí odkaz:
http://arxiv.org/abs/2311.01510
Autor:
Ilic, Dragana, Shapovalova, Alla I., Popovic, Luka C., Chavushyan, Vahram, Burenkov, Alexander N., Kollatschny, Wolfram, Kovacevic, Andjelka, Marceta-Mandic, Sladjana, Rakic, Nemanja, La Mura, Giovanni, Rafanelli, Piero
Publikováno v:
2017, Frontiers in Astronomy and Space Sciences, 4, 12
We present the results of the long-term optical monitoring campaign of active galactic nuclei (AGN) coordinated by the Special Astrophysical Observatory of the Russian Academy of Science. This campaign has produced a remarkable set of optical spectra
Externí odkaz:
http://arxiv.org/abs/1803.10860
Autor:
La Mura, Giovanni, Berton, Marco, Chen, Sina, Chougule, Abhishek, Ciroi, Stefano, Congiu, Enrico, Cracco, Valentina, Frezzato, Michele, Mordini, Sabrina, Rafanelli, Piero
The spectra of Active Galactic Nuclei (AGNs) are often characterized by a wealth of emission lines with different profiles and intensity ratios that led to a complicated classification. Their electro-magnetic radiation spans more than 10 orders of ma
Externí odkaz:
http://arxiv.org/abs/1710.10211
Autor:
La Mura, Giovanni, Berton, Marco, Chen, Sina, Ciroi, Stefano, Congiu, Enrico, Cracco, Valentina, Frezzato, Michele, Rafanelli, Piero
Active Galactic Nuclei (AGNs) are characterized by emission of radiation over more than 10 orders of magnitude in frequency. Therefore, the execution of extensive surveys of the sky, with different types of detectors, is providing the attractive poss
Externí odkaz:
http://arxiv.org/abs/1710.01274
Autor:
Congiu, Enrico, Contini, Marcella, Ciroi, Stefano, Cracco, Valentina, Di Mille, Francesco, Berton, Marco, Frezzato, Michele, La Mura, Giovanni, Rafanelli, Piero
We present our recent results about the extended narrow-line region (ENLR) of two nearby Seyfert 2 galaxies (IC 5063 and NGC 7212) obtained by modelling the observed line profiles and spectra with composite models (photoionization+shocks) in the diff
Externí odkaz:
http://arxiv.org/abs/1710.01173
In its first four years of operation, the Fermi Large Area Telescope (LAT) detected 3033 $\gamma$-ray emitting sources. In the Fermi-LAT Third Source Catalogue (3FGL) about 50% of the sources have no clear association with a likely $\gamma$-ray emitt
Externí odkaz:
http://arxiv.org/abs/1705.09832
Autor:
Rakic, Nemanja, La Mura, Giovanni, Ilic, Dragana, Shapovalova, Alla I., Kollatschny, Wolfram, Rafanelli, Piero, Popovic, Luka C.
Publikováno v:
A&A 603, A49 (2017)
We investigate the intrinsic Baldwin effect (Beff) of the broad H$\alpha$ and H$\beta$ emission lines for six Type 1 active galactic nuclei (AGNs) with different broad line characteristics: two Seyfert 1 (NGC 4151 and NGC 5548), two AGNs with double-
Externí odkaz:
http://arxiv.org/abs/1703.06188
Autor:
La Mura, Giovanni, Busetto, Giovanni, Ciroi, Stefano, Rafanelli, Piero, Berton, Marco, Congiu, Enrico, Cracco, Valentina, Frezzato, Michele
Relativistic jets of plasma are a key ingredient of many types of Active Galactic Nuclei (AGN). Today we know that AGNs are powered by the accretion of inter stellar material into the gravitational field of a Super Massive Black Hole and that this pr
Externí odkaz:
http://arxiv.org/abs/1702.06779
Publikováno v:
EPJ Web of Conferences. 3/23/2023, Vol. 280, p1-8. 8p.
