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

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

Fermi-LAT

Collaboration

Feb 1, 2017

24 pages

Published in:

Astrophys.J. 843 (2017) 2, 139

Published: Jul 13, 2017

e-Print:

1702.00476 [astro-ph.HE]

DOI:

10.3847/1538-4357/aa775a

Experiments:

FERMI-LAT

View in:

reference search103 citations

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Abstract: (IOP)

The spatial extension of a γ-ray source is an essential ingredient to determine its spectral properties, as well as its potential multiwavelength counterpart. The capability to spatially resolve γ-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° 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.

Note:

33 pages, 22 figures & 3 tables. Published by The Astrophysical Journal. Available on the Fermi Science Support Center (FSSC) together with the 3FHL catalog

catalogs
gamma rays: general
galaxy
gamma ray
spectral
acceptance
GLAST
gamma ray: energy spectrum

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