Incremental Fermi Large Area Telescope Fourth Source Catalog

Abdollahi S, Acero F, Baldini L, Ballet J, Bastieri D, Bellazzini R, Berenji B, Berretta A, Bissaldi E, Blandford RD, Bloom E, Bonino R, Brill A, Britto RJ, Bruel P, Burnett TH, Buson S, Cameron RA, Caputo R, Caraveo PA, Castro D, Chaty S, Cheung CC, Chiaro G, Cibrario N, Ciprini S, Coronado-Blazquez J, Crnogorcevic M, Cutini S, D'Ammando F, De Gaetano S, Digel SW, Di Lalla N, Dirirsa F, Di Venere L, Dominguez A, Fallah Ramazani V, Fegan SJ, Ferrara EC, Fiori A, Fleischhack H, Franckowiak A, Fukazawa Y, Funk S, Fusco P, Galanti G, Gammaldi V, Gargano F, Garrappa S, Gasparrini D, Giacchino F, Giglietto N, Giordano F, Giroletti M, Glanzman T, Green D, Grenier IA, Grondin MH, Guillemot L, Guiriec S, Gustafsson M, Harding AK, Hays E, Hewitt JW, Horan D, Hou X, Johannesson G, Karwin C, Kayanoki T, Kerr M, Kuss M, Landriu D, Larsson S, Latronico L, Lemoine-Goumard M, Li J, Liodakis I, Longo F, Loparco F, Lott B, Lubrano P, Maldera S, Malyshev D, Manfreda A, Marti-Devesa G, Mazziotta MN, Mereu I, Meyer M, Michelson PF, Mirabal N, Mitthumsiri W, Mizuno T, Moiseev AA, Monzani ME, Morselli A, Moskalenko IV, Negro M, Nuss E, Omodei N, Orienti M, Orlando E, Paneque D, Pei Z, Perkins JS, Persic M, Pesce-Rollins M, Petrosian V, Pillera R, Poon H, Porter TA, Principe G, Raino S, Rando R, Rani B, Razzano M, Razzaque S, Reimer A, Reimer O, Reposeur T, Sanchez-Conde M, Saz Parkinson PM, Scotton L, Serini D, Sgro C, Siskind EJ, Smith DA, Spandre G, Spinelli P, Sueoka K, Suson DJ, Tajima H, Tak D, Thayer JB, Thompson DJ, Torres DF, Troja E, Valverde J, Wood K, Zaharijas G (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Book Volume: 260

Journal Issue: 2

DOI: 10.3847/1538-4365/ac6751

Abstract

We present an incremental version (4FGL-DR3, for Data Release 3) of the fourth Fermi Large Area Telescope (LAT) catalog of gamma-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.

Authors with CRIS profile

Involved external institutions

École Polytechnique - Université Paris-Saclay France (FR) National Institute for Nuclear Physics / Istituto Nazionale di Fisica Nucleare (INFN) Italy (IT) California State University, Los Angeles United States (USA) (US) Università degli Studi di Perugia Italy (IT) Université Fédérale de Toulouse Midi-Pyrénées France (FR) University of Pisa / Università di Pisa (UniPi) Italy (IT) University of Washington United States (USA) (US) Julius-Maximilians-Universität Würzburg Germany (DE) Stanford University United States (USA) (US) National Aeronautics and Space Administration (NASA) United States (USA) (US) National Institute for Astrophysics / Istituto Nazionale Astrofisica (INAF) Italy (IT) U.S. Naval Research Laboratory United States (USA) (US) University of Bari Aldo Moro / Università degli Studi di Bari Aldo Moro Italy (IT) University of the Free State South Africa (ZA) Universidad Autónoma de Madrid (UAM) Spain (ES) Max-Planck-Institut für Physik (Werner-Heisenberg-Institut, MPP) / Max Planck Institute for Physics Germany (DE) Institut national de physique nucléaire et de physique des particules (IN2P3) France (FR) Mahidol University / มหาวิทยาลัยมหิดล Thailand (TH) Georg-August-Universität Göttingen Germany (DE) Los Alamos National Laboratory United States (USA) (US) University of North Florida (UNF) United States (USA) (US) Chinese Academy of Sciences (CAS) / 中国科学院 China (CN) University of Iceland (UI) / Háskóli Íslands Iceland (IS) Hiroshima University Japan (JP) Royal Institute of Technology / Kungliga Tekniska Högskolan (KTH) Sweden (SE) University of Science and Technology of China (USTC) China (CN) University of Turku / Turun yliopisto Finland (FI) University of Maryland United States (USA) (US) Ethiopian Space Science and Technology Institute (ESSTI) / የኢትዮጵያ ስፔስ ሳይንስ እና ቴክኖሎጂ ተቋም Ethiopia (ET) Universidad Complutense de Madrid (UCM) Spain (ES) Ruhr-Universität Bochum (RUB) Germany (DE) University of Montpellier / Université Montpellier France (FR) University of Padua / Universita degli Studi di Padova Italy (IT) University of Johannesburg South Africa (ZA) NYCB Real-Time Computing, Inc. United States (USA) (US) Deutsches Elektronen-Synchrotron DESY Germany (DE) Clemson University United States (USA) (US) Leopold-Franzens-Universität Innsbruck / University of Innsbruck Austria (AT) University of California Santa Cruz United States (USA) (US) University of Nova Gorica / Univerza v Novi Gorici Slovenia (SI) Purdue University Northwest / Purdue University Calumet United States (USA) (US) Spanish National Research Council / Consejo Superior de Investigaciones Científicas (CSIC) Spain (ES) Praxis, Inc. United States (USA) (US)

How to cite

APA:

Abdollahi, S., Acero, F., Baldini, L., Ballet, J., Bastieri, D., Bellazzini, R.,... Zaharijas, G. (2022). Incremental Fermi Large Area Telescope Fourth Source Catalog. Astrophysical Journal Supplement Series, 260(2). https://dx.doi.org/10.3847/1538-4365/ac6751

MLA:

Abdollahi, S., et al. "Incremental Fermi Large Area Telescope Fourth Source Catalog." Astrophysical Journal Supplement Series 260.2 (2022).

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