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The Fourth Catalog of Active Galactic Nuclei Detected by the Fermi Large Area Telescope: Data Release 3

data release 3

descriptionPublicationkeyboard_double_arrow_right Article , Research , Preprint 16 Nov 2022Embargo end date: 01 Jan 2022 France, France, Italy, Germany, Slovenia, Spain, Italy, Italy, Italy, France, France, France, Spain, Italy, Italy, France, Italy Publisher:American Astronomical SocietyJournal:The Astrophysical Journal Supplement Series, volume 263, page 24 (issn: 0067-0049, eissn: 1538-4365,

Authors: LAT Collaboration; Ajello, Marco; Baldini, Luca; Ballet, Jean; Bastieri, Denis; Gonzalez, Josefa Becerra; Bellazzini, Ronaldo; +96 Authors

The Fourth Catalog of Active Galactic Nuclei Detected by the Fermi Large Area Telescope: Data Release 3

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Abstract

Abstract An incremental version of the fourth catalog of active galactic nuclei (AGNs) detected by the Fermi Large Area Telescope is presented. This version (4LAC-DR3) derives from the third data release of the 4FGL catalog based on 12 yr of E > 50 MeV gamma-ray data, where the spectral parameters, spectral energy distributions (SEDs), yearly light curves, and associations have been updated for all sources. The new reported AGNs include 587 blazar candidates and four radio galaxies. We describe the properties of the new sample and outline changes affecting the previously published one. We also introduce two new parameters in this release, namely the peak energy of the SED high-energy component and the corresponding flux. These parameters allow an assessment of the Compton dominance, the ratio of the inverse-Compton to the synchrotron-peak luminosities, without relying on X-ray data.

Countries

France, France, Italy, Germany, Slovenia, Spain, Italy, Italy, Italy, France, France, France, Spain, Italy, Italy, France, Italy

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Keywords

539.1, Active galactic nuclei; Gamma-ray astronomy; Blazars; Flat-spectrum radio quasars; BL Lacertae objects; Spectral energy distribution; Astrophysics; High Energy Astrophysical Phenomena; Astrophysics of Galaxies, FOS: Physical sciences, Blazar, 530, BL Lacertae object, Astrophysic, Emission, gamma ray astrophysics, High Energy Astrophysical Phenomena, High Energy Astrophysical Phenomena (astro-ph.HE), Flat-spectrum radio quasars, Active galactic nuclei, Gamma-ray astronomy, Astrophysics of Galaxies, Active galactic nuclei, Gamma ray astronomy, Blazars, Flat spectrum radio quasars, BL Lacertae objects, Spectral energy distribution, High Energy Astrophysical Phenomena, Astrophysics of Galaxies, Física, 2207 Física Atómica y Nuclear, Galaxies, Astrophysics - Astrophysics of Galaxies, 520, Galaxy, BL Lacertae Object, Astrophysics of Galaxies (astro-ph.GA), active galactic nucleai, BL Lacertae objects, Física nuclear, info:eu-repo/classification/udc/52, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], [PHYS.ASTR] Physics [physics]/Astrophysics [astro-ph], Astrophysics - High Energy Astrophysical Phenomena, info:eu-repo/classification/ddc/520, Blazars, Flat-spectrum radio quasar, Spectral energy distribution, ddc: ddc:530

Impact byBIP!

	citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	62
	popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.	Top 10%
	influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	Top 10%
	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Top 1%