Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Cracco, Valentina"'
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
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
Autor:
Berton, Marco, Caccianiga, Alessandro, Foschini, Luigi, Peterson, Bradley M., Mathur, Smita, Terreran, Giacomo, Ciroi, Stefano, Congiu, Enrico, Cracco, Valentina, Frezzato, Michele, La Mura, Giovanni, Rafanelli, Piero
Publikováno v:
A&A 591, A98 (2016)
Narrow-line Seyfert 1 galaxies (NLS1s) are an interesting subclass of active galactic nuclei (AGN), which tipically does not exhibit any strong radio emission. Seven percent of them, though, are radio-loud and often show a flat radio-spectrum (F-NLS1
Externí odkaz:
http://arxiv.org/abs/1601.06165
Autor:
Berton, Marco, Foschini, Luigi, Ciroi, Stefano, Cracco, Valentina, La Mura, Giovanni, Lister, Matthew L., Mathur, Smita, Peterson, Bradley M., Richards, Joseph L., Rafanelli, Piero
Publikováno v:
A&A 578, A28 (2015)
Flat-spectrum radio-loud Narrow-Line Seyfert 1 galaxies (NLS1s) are a recently discovered class of $\gamma$-ray emitting Active Galactic Nuclei (AGN), that exhibit some blazar-like properties which are explained with the presence of a relativistic je
Externí odkaz:
http://arxiv.org/abs/1504.02772
Autor:
Tofflemire, Benjamin M., Orio, Marina, Page, Kim L., Osborne, Julian P., Ciroi, Stefano, Cracco, Valentina, Di Mille, Francesco, Maxwell, Michael
The recurrent nova T Pyx was observed with the X-ray gratings of Chandra and XMM-Newton, 210 and 235 days, respectively, after the discovery of the 2011 April 14 outburst. The X-ray spectra show prominent emission lines of C, N, and O, with broadenin
Externí odkaz:
http://arxiv.org/abs/1311.2893
Autor:
Cracco, Valentina
Publikováno v:
Publications of the Astronomical Society of the Pacific, 2011 . 123(907), 1133-1134.
Externí odkaz:
https://www.jstor.org/stable/10.1086/661951
Autor:
Chen, Sina, Berton, Marco, La Mura, Giovanni, Congiu, Enrico, Cracco, Valentina, Fan, Junhui, Ciroi, Stefano, Rafanelli, Piero, Bastieri, Denis
In this talk, I will present a new accurate catalog of narrow-line Seyfert 1 galaxies (NLS1s) in the southern hemisphere from the Six-degree Field Galaxy Survey (6dFGS) final data release, which is currently the most extensive spectroscopic survey av
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::41ef014136c95a15d9233112779c0c27
Autor:
Berton, Marco, Foschini, Luigi, Caccianiga, Alessandro, Ciroi, Stefano, Congiu, Enrico, Cracco, Valentina, Mura, Giovanni La, Frezzato, Michele, Rafanelli, Piero
This study present the similarities of compact steep spectrum (CSS) sources and narrow-line Seyfert 1 (NLS1) galaxies
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bef0025fafb1e5f40d2893148bd234b9