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Title: Incremental Fermi Large Area Telescope Fourth Source Catalog
Authors: S. Abdollahi
F. Acero
L. Baldini
J. Ballet
D. Bastieri
R. Bellazzini
B. Berenji
A. Berretta
E. Bissaldi
R. D. Blandford
E. Bloom
R. Bonino
A. Brill
R. J. Britto
P. Bruel
T. H. Burnett
S. Buson
R. A. Cameron
R. Caputo
P. A. Caraveo
D. Castro
S. Chaty
C. C. Cheung
G. Chiaro
N. Cibrario
S. Ciprini
J. Coronado-Blázquez
M. Crnogorcevic
S. Cutini
F. D'Ammando
S. De Gaetano
S. W. Digel
N. Di Lalla
F. Dirirsa
L. Di Venere
A. Domínguez
V. Fallah Ramazani
S. J. Fegan
E. C. Ferrara
A. Fiori
H. Fleischhack
A. Franckowiak
Y. Fukazawa
S. Funk
P. Fusco
G. Galanti
V. Gammaldi
F. Gargano
S. Garrappa
D. Gasparrini
F. Giacchino
N. Giglietto
F. Giordano
M. Giroletti
T. Glanzman
D. Green
I. A. Grenier
M. H. Grondin
L. Guillemot
S. Guiriec
M. Gustafsson
A. K. Harding
E. Hays
J. W. Hewitt
D. Horan
X. Hou
G. Jóhannesson
C. Karwin
T. Kayanoki
M. Kerr
M. Kuss
D. Landriu
S. Larsson
L. Latronico
M. Lemoine-Goumard
J. Li
I. Liodakis
F. Longo
F. Loparco
B. Lott
P. Lubrano
S. Maldera
D. Malyshev
A. Manfreda
G. Martí-Devesa
M. N. Mazziotta
I. Mereu
M. Meyer
P. F. Michelson
N. Mirabal
W. Mitthumsiri
T. Mizuno
A. A. Moiseev
M. E. Monzani
A. Morselli
I. V. Moskalenko
M. Negro
E. Nuss
N. Omodei
M. Orienti
Oskar Klein Centre
Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
Istituto Nazionale di Fisica Nucleare, Sezione di Perugia
Istituto Nazionale di Fisica Nucleare, Sezione di Bari
Istituto Nazionale di Fisica Nucleare, Sezione di Roma Tor Vergata
Istituto Nazionale di Fisica Nucleare, Sezione di Torino
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
Istituto Nazionale Di Fisica Nucleare, Sezione di Padova
Laboratoire Univers et Particules de Montpellier
Universite Paris-Saclay
Université de Bordeaux
INAF Istituto di Astrofisica Spaziale e Fisica Cosmica, Milan
Raunvísindastofnun Háskólans
Agenzia Spaziale Italiana
Georg-August-Universität Göttingen
Hiroshima University
California State University, Los Angeles
Deutsches Elektronen-Synchrotron (DESY)
Universite d'Orleans
Università di Pisa
Stockholms universitet
Politecnico di Bari
Universidad Complutense de Madrid
Naval Research Laboratory
Universite Paul Sabatier Toulouse III
Universidad Autónoma de Madrid
Clemson University
SLAC National Accelerator Laboratory
University of Maryland, Baltimore County (UMBC)
Harvard-Smithsonian Center for Astrophysics
Catholic University of America
University of Maryland, College Park
Chinese Academy of Sciences
University of Science and Technology of China
Università degli Studi di Trieste
University of the Free State
University of Washington
Högskolan Dalarna
National Astronomical Observatories Chinese Academy of Sciences
École polytechnique
Mahidol University
Julius-Maximilians-Universität Würzburg
Istituto Di Radioastronomia, Bologna
Università degli Studi di Torino
Universität Innsbruck
Max Planck Institute for Physics (Werner Heisenberg Institute)
CNRS Centre National de la Recherche Scientifique
Turun yliopisto
NASA Goddard Space Flight Center
Los Alamos National Laboratory
Ruhr-Universitat Bochum
The George Washington University
Università degli Studi di Perugia
The Royal Institute of Technology (KTH)
Friedrich-Alexander-Universität Erlangen-Nürnberg
Università degli Studi di Padova
University of North Florida
Ethiopian Space Science and Technology Institute
Keywords: Earth and Planetary Sciences;Physics and Astronomy
Issue Date: 1-Jun-2022
Citation: Astrophysical Journal, Supplement Series. Vol.260, No.2 (2022)
Abstract: We present an incremental version (4FGL-DR3, for Data Release 3) of the fourth Fermi Large Area Telescope (LAT) catalog of 3-ray sources. Based on the first 12 years of science data in the energy range from 50 MeV to 1 TeV, it contains 6658 sources. The analysis improves on that used for the 4FGL catalog over eight years of data: more sources are fit with curved spectra, we introduce a more robust spectral parameterization for pulsars, and we extend the spectral points to 1 TeV. The spectral parameters, spectral energy distributions, and associations are updated for all sources. Light curves are rebuilt for all sources with 1 yr intervals (not 2 month intervals). Among the 5064 original 4FGL sources, 16 were deleted, 112 are formally below the detection threshold over 12 yr (but are kept in the list), while 74 are newly associated, 10 have an improved association, and seven associations were withdrawn. Pulsars are split explicitly between young and millisecond pulsars. Pulsars and binaries newly detected in LAT sources, as well as more than 100 newly classified blazars, are reported. We add three extended sources and 1607 new point sources, mostly just above the detection threshold, among which eight are considered identified, and 699 have a plausible counterpart at other wavelengths. We discuss the degree-scale residuals to the global sky model and clusters of soft unassociated point sources close to the Galactic plane, which are possibly related to limitations of the interstellar emission model and missing extended sources.
ISSN: 00670049
Appears in Collections:Scopus 2022

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