Fourth catalog of Fermi LAT-detected AGNs (4LAC)

DOI

The fourth catalog of active galactic nuclei (AGNs) detected by the Fermi Gamma-ray Space Telescope Large Area Telescope (4LAC) between 2008 August 4 and 2016 August 2 contains 2863 objects located at high Galactic latitudes (|b|>10{deg}). It includes 85% more sources than the previous 3LAC catalog based on 4yr of data. AGNs represent at least 79% of the high-latitude sources in the fourth Fermi-Large Area Telescope Source Catalog (4FGL), which covers the energy range from 50MeV to 1TeV. In addition, 344 gamma-ray AGNs are found at low Galactic latitudes. Most of the 4LAC AGNs are blazars (98%), while the remainder are other types of AGNs. The blazar population consists of 24% Flat Spectrum Radio Quasars (FSRQs), 38% BL Lac-type objects, and 38% blazar candidates of unknown types (BCUs). On average, FSRQs display softer spectra and stronger variability in the gamma-ray band than BL Lacs do, confirming previous findings. All AGNs detected by ground-based atmospheric Cerenkov telescopes are also found in the 4LAC.

Cone search capability for table J/ApJ/892/105/4lac (Combined table from original tables)

Cone search capability for table J/ApJ/892/105/table5 (3LAC sources not present in 4LAC)

Identifier
DOI http://doi.org/10.26093/cds/vizier.18920105
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/ApJ/892/105
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/892/105
Related Identifier https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/892/105
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/ApJ/892/105
Provenance
Creator Ajello M.; Angioni R.; Axelsson M.; Ballet J.; Barbiellini G.; Bastieri D.,Becerra Gonzalez J.; Bellazzini R.; Bissaldi E.; Bloom E.D.; Bonino R.,Bottacini E.; Bruel P.; Buson S.; Cafardo F.; Cameron R.A.; Cavazzuti E.,Chen S.; Cheung C.C.; Ciprini S.; Costantin D.; Cutini S.; D'Ammando F.,de la Torre Luque P.; de Menezes R.; de Palma F.; Desai A.; Di Lalla N.,Di Venere L.; Dominguez A.; Dirirsa F.F.; Ferrara E.C.; Finke J.,Franckowiak A.; Fukazawa Y.; Funk S.; Fusco P.; Gargano F.; Garrappa S.,Gasparrini D.; Giglietto N.; Giordano F.; Giroletti M.; Green D.,Grenier I.A.; Guiriec S.; Harita S.; Hays E.; Horan D.; Itoh R.,Johannesson G.; Kovac'evic' M.; Krauss F.; Kreter M.; Kuss M.; Larsson S.,Leto C.; Li J.; Liodakis I.; Longo F.; Loparco F.; Lott B.; Lovellette M.N.,Lubrano P.; Madejski G.M.; Maldera S.; Manfreda A.; Marti-Devesa G.,Massaro F.; Mazziotta M.N.; Mereu I.; Meyer M.; Migliori G.; Mirabal N.,Mizuno T.; Monzani M.E.; Morselli A.; Moskalenko I.V.; Negro M.; Nemmen R.,Nuss E.; Ojha L.S.; Ojha R.; Omodei N.; Orienti M.; Orlando E.; Ormes J.F.,Paliya V.S.; Pei Z.; Pena-Herazo H.; Persic M.; Pesce-Rollins M.; Petrov L.,Piron F.; Poon H.; Principe G.; Raino S.; Rando R.; Rani B.; Razzano M.,Razzaque S.; Reimer A.; Reimer O.; Schinzel F.K.; Serini D.; Sgro C.,Siskind E.J.; Spandre G.; Spinelli P.; Suson D.J.; Tachibana Y.,Thompson D.J.; Torres D.F.; Torresi E.; Troja E.; Valverde J.; van Zyl P.,Yassine M.
Publisher CDS
Publication Year 2021
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Cosmology; Galactic and extragalactic Astronomy; High Energy Astrophysics; Natural Sciences; Observational Astronomy; Physics; Stellar Astronomy