A new sample of gamma-ray emitting jetted active galactic nuclei—preliminary results

Luigi Foschini*, Matthew L. Lister, Sonia Antón, Marco Berton, Stefano Ciroi, Maria J.M. Marchã, Merja Tornikoski, Emilia Järvelä, Patrizia Romano, Stefano Vercellone, Elena Dalla Bontà

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

4 Downloads (Pure)

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.

Original languageEnglish
Article number372
Number of pages111
JournalUniverse
Volume7
Issue number10
DOIs
Publication statusPublished - 5 Oct 2021
MoE publication typeA1 Journal article-refereed

Keywords

  • BL lac objects
  • Quasars
  • Relativistic jets
  • Seyfert galaxies

Fingerprint

Dive into the research topics of 'A new sample of gamma-ray emitting jetted active galactic nuclei—preliminary results'. Together they form a unique fingerprint.

Cite this