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Title: A New Sample of Gamma-Ray Emitting Jetted Active Galactic Nuclei—Preliminary Results
Authors: Foschini, Luigi
Lister, Matthew L.
Antón, Sonia
Berton, Marco
Ciroi, Stefano
Marchã, Maria J. M.
Tornikoski, Merja
Järvelä, Emilia
Romano, Patrizia
Vercellone, Stefano
Dalla Bontà, Elena
Keywords: BL lac objects; Quasars; Relativistic jets; Seyfert galaxies
Issue Date: 2021
Serial title, monograph or event: Universe
Volume: 7
Issue: 10
Abstract: We are compiling a new list of gamma-ray jetted active galactic nuclei (AGN), starting from the fourth catalog of point sources of the Fermi Large Area Telescope (LAT). Our aim is to prepare a list of jetted AGN with known redshifts and classifications to be used to calibrate jet power. We searched in the available literature for all the published optical spectra and multiwavelength studies useful to characterize the sources. We found new, missed, or even forgotten information leading to a substantial change in the redshift values and classification of many sources. We present here the preliminary results of this analysis and some statistics based on the gamma-ray sources with right ascension within the interval 0h–12h (J2000). Although flat-spectrum radio quasars and BL Lac objects are still the dominant populations, there is a significant increase in the number of other objects, such as misaligned AGN, narrow-line Seyfert 1 galaxies, and Seyfert galaxies. We also introduced two new classes of objects: changing-look AGN and ambiguous sources. About one third of the sources remain unclassified. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
ISSN: 2218-1997
DOI: 10.3390/universe7100372
Rights: openAccess
Appears in Collections:I&D CFis - Artigos em Revistas Internacionais

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