Search for Extended Sources in the Galactic Plane Using Six Years of Fermi-Large Area Telescope Pass 8 Data above 10GeV

Ackermann M, Ajello M, Baldini L, Ballet J, Barbiellini G, Bastieri D, Bellazzini R, Bissaldi E, Bloom ED, Bonino R, Bottacini E, Brandt TJ, Bregeon J, Bruel P, Buehler R, Cameron RA, Caragiulo M, Caraveo PA, Castro D, Cavazzuti E, Cecchi C, Charles E, Chekhtman A, Cheung CC, Chiaro G, Ciprini S, Cohen JM, Costantin D, Costanza F, Cutini S, D'Ammando F, De Palma F, Desiante R, Digel SW, Di Lalla N, Di Mauro M, Di Venere L, Favuzzi C, Fegan SJ, Ferrara EC, Franckowiak A, Fukazawa Y, Funk S, Fusco P, Gargano F, Gasparrini D, Giglietto N, Giordano F, Giroletti M, Green D, Grenier IA, Grondin MH, Guillemot L, Guiriec S, Harding AK, Hays E, Hewitt JW, Horan D, Hou X, Johannesson G, Kamae T, Kuss M, La Mura G, Larsson S, Lemoine-Goumard M, Li J, Longo F, Loparco F, Lubrano P, Magill JD, Maldera S, Malyshev D, Manfreda A, Mazziotta MN, Michelson PF, Mitthumsiri W, Mizuno T, Monzani ME, Morselli A, Moskalenko IV, Negro M, Nuss E, Ohsugi T, Omodei N, Orienti M, Orlando E, Ormes JF, Paliya VS, Paneque D, Perkins JS, Persic M, Pesce-Rollins M, Petrosian V, Piron F, Porter TA, Principe G, Raino S, Rando R, Razzano M, Razzaque S, Reimer A, Reimer O, Reposeur T, Sgro C, Simone D, Siskind EJ, Spada F, Spandre G, Spinelli P, Suson DJ, Tak D, Thayer JB, Thompson DJ, Torres DF, Tosti G, Troja E, Vianello G, Wood KS, Wood M (2017)

Publication Type: Journal article

Publication year: 2017

Journal

Book Volume: 843

Journal Issue: 2

DOI: 10.3847/1538-4357/aa775a

Abstract

The spatial extension of gamma-ray source is an essential ingredient to determine its spectral properties, as well as its potential multiwavelength counterpart. The capability to spatially resolve gamma-ray sources is greatly improved by the newly delivered Fermi-Large Area Telescope (LAT) Pass 8 event-level analysis, which provides a greater acceptance and an improved point-spread function, two crucial factors for the detection of extended sources. Here, we present a complete search for extended sources located within 7 degrees from the Galactic plane, using 6 yr of Fermi-LAT data above 10 GeV. We find 46 extended sources and provide their morphological and spectral characteristics. This constitutes the first catalog of hard Fermi-LAT extended sources, named the Fermi Galactic Extended Source Catalog, which allows a thorough study of the properties of the Galactic plane in the sub-TeV domain.

Authors with CRIS profile

Involved external institutions

Clemson University United States (USA) (US) National Institute for Nuclear Physics / Istituto Nazionale di Fisica Nucleare (INFN) Italy (IT) École Polytechnique - Université Paris-Saclay France (FR) Italian Space Agency / Agenzia Spaziale Italiana (ASI) Italy (IT) National Institute for Astrophysics / Istituto Nazionale Astrofisica (INAF) Italy (IT) University of Padua / Universita degli Studi di Padova Italy (IT) Deutsches Elektronen-Synchrotron DESY Germany (DE) National Aeronautics and Space Administration (NASA) United States (USA) (US) Stanford University United States (USA) (US) Commissariat à l'énergie atomique France (FR) Royal Institute of Technology / Kungliga Tekniska Högskolan (KTH) Sweden (SE) University of Orléans / Université d'Orléans France (FR) Université Bordeaux 1, Sciences et Technologies France (FR) University of Montpellier / Université Montpellier France (FR) University of Pisa / Università di Pisa (UniPi) Italy (IT) NYCB Real-Time Computing, Inc. United States (USA) (US) Spanish National Research Council / Consejo Superior de Investigaciones Científicas (CSIC) Spain (ES) Hiroshima University / 広島大学 Japan (JP) University of Maryland United States (USA) (US) Mahidol University / มหาวิทยาลัยมหิดล Thailand (TH) University of North Florida (UNF) United States (USA) (US) Chinese Academy of Sciences (CAS) / 中国科学院 China (CN) Max-Planck-Institut für Physik (Werner-Heisenberg-Institut, MPP) / Max Planck Institute for Physics Germany (DE) University of Iceland (UI) / Háskóli Íslands Iceland (IS) Purdue University Northwest / Purdue University Calumet United States (USA) (US) Praxis, Inc. United States (USA) (US) University of Denver United States (USA) (US) University of Tokyo Japan (JP) University of Johannesburg South Africa (ZA) George Mason University United States (USA) (US) U.S. Naval Research Laboratory United States (USA) (US)

How to cite

APA:

Ackermann, M., Ajello, M., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D.,... Wood, M. (2017). Search for Extended Sources in the Galactic Plane Using Six Years of Fermi-Large Area Telescope Pass 8 Data above 10GeV. Astrophysical Journal, 843(2). https://doi.org/10.3847/1538-4357/aa775a

MLA:

Ackermann, Markus, et al. "Search for Extended Sources in the Galactic Plane Using Six Years of Fermi-Large Area Telescope Pass 8 Data above 10GeV." Astrophysical Journal 843.2 (2017).

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