An orientation-based unification of young jetted active galactic nuclei: the case of 3C 286

Journal
Date Issued
2017
Author(s)
Berton, Marco
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•
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Ciroi, Stefano
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Congiu, Enrico
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Cracco, Valentina
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Frezzato, Michele
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•
Rafanelli, Piero
DOI
Abstract
In recent years, the old paradigm according to which only high-mass black holes can launch powerful relativistic jets in active galactic nuclei (AGN) has begun to crumble. The discovery of γ-rays coming from narrow-line Seyfert 1 galaxies (NLS1s), usually considered young and growing AGN harboring a central black hole with mass typically lower than 10^8 M_☉, indicated that also these low-mass AGN can produce powerful relativistic jets. The search for parent population of γ-ray emitting NLS1s revealed their connection with compact steep-spectrum sources (CSS). In this proceeding we present a review of the current knowledge of these sources, we present the new important case of 3C 286, classified here for the fist time as NLS1, and we finally provide a tentative orientation based unification of NLS1s and CSS sources.
Volume
4
Uri
Url
Issn Identifier
2296-987X
Ads BibCode
2017FrASS...4....8B
Rights
open.access
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