Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/26061
Title: | A Phylogenetic View Of The Eigenvector 1 Of Quasars | Authors: | Fraix-Burnet, Didier MARZIANI, Paola D'Onofrio, M. Dultzin, D. |
Issue Date: | 2016 | Volume: | Active Galactic Nuclei 12: A Multi-Messenger Perspective (AGN12) | Abstract: | A cladistic analysis on samples of low-z quasars (z<0.7) separates sources radiating at higher Eddington ratios values, as well as radio-quiet from radio-loud quasars. The analysis properly distinguishes also core-dominated and lobe-dominated quasars, in agreement with the basic tenet of Unification schemes, and suggests a black hole mass threshold for powerful radio emission. Considering that the black hole mass then provides a sort of "arrow of time” of nuclear activity, an evolutionary interpretation becomes possible if cladistic trees are rooted on black hole mass. More massive radio-quiet Population B sources at low-z become a more evolved counterpart of Population A i.e., wind dominated sources, to which at least part of the “local” Narrow-Line Seyfert 1s belong. In this scheme, powerful radio-loud sources may be seen as sources belonging to a most evolved quasar population. | Conference Name: | Active Galactic Nuclei 12: A Multi-Messenger Perspective (AGN12) | Conference Place: | Napoli, Italy | Conference Date: | 26-29 settembre, 2016 | URI: | http://hdl.handle.net/20.500.12386/26061 | URL: | https://zenodo.org/record/163829#.Xsl6QRMzaRs | DOI: | 10.5281/zenodo.163829 | Bibcode ADS: | 2016agnt.confE..67F | Fulltext: | open |
Appears in Collections: | 4.09 Prodotti multimediali |
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File | Description | Size | Format | |
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agn12_marziani_poster.pdf | poster | 5.85 MB | Adobe PDF | View/Open |
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