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Search for Extended Sources in the Galactic Plane Using Six Years of Fermi-Large Area Telescope Pass 8 Data above 10GeV
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2017 (English)In: Astrophysical Journal, ISSN 0004-637X, E-ISSN 1538-4357, Vol. 843, no 2, article id 139Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
Institute of Physics Publishing (IOPP), 2017. Vol. 843, no 2, article id 139
Keyword [en]
catalogs, gamma rays: general
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Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-211609DOI: 10.3847/1538-4357/aa775aISI: 000405673400013Scopus ID: 2-s2.0-85025111888OAI: oai:DiVA.org:kth-211609DiVA, id: diva2:1130930
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QC 20170811

Available from: 2017-08-11 Created: 2017-08-11 Last updated: 2017-08-11Bibliographically approved

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