Fermi Large Area Telescope Third Source Catalog
By The Fermi-LAT Collaboration. 2015
854 citations recorded by the source corpus.
We present the third Fermi Large Area Telescope (LAT) source catalog (3FGL) of sources in the 100MeV– 300 GeV range. Based on the first 4 yr of science data from the Fermi Gamma-ray Space Telescope mission, it is the deepest yet in this energy range. Relative to the Second Fermi LAT catalog, the 3FGL catalog incorporates twice as much data, as well as a number of analysis improvements, including improved calibrations at the event reconstruction level, an updated model for Galactic diffuse γ-ray emission, a refined procedure for source detection, and improved methods for associating LAT sources with potential counterparts at other wavelengths. The 3FGL catalog includes 3033 sources above 4σ significance, with source location regions, spectral properties, and monthly light curves for each. Of these, 78 are flagged as potentially being due to imperfections in the model for Galactic diffuse emission. Twenty-five sources are modeled explicitly as spatially extended, and overall 238 sources are considered as identified based on angular extent or correlated variability (periodic or otherwise) observed at other wavelengths. For 1010 sources we have not found plausible counterparts at other wavelengths. More than 1100 of the identified or associated sources are active galaxies of the blazar class; several other classes of non-blazar active galaxies are also represented in the 3FGL. Pulsars represent the largest Galactic source class. From source counts of Galactic sources we estimate that the contribution of unresolved sources to the Galactic diffuse emission is ∼3% at 1 GeV.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/e0c1dc2cf93d7c0a8fb1fec88a9244c50d930e5c
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Citations in the corpus
- MINUTE-TIMESCALE >100 MeV γ-RAY VARIABILITY DURING THE GIANT OUTBURST OF QUASAR 3C 279 OBSERVED BY FERMI-LAT IN 2015 JUNE (2016, methodology): “The background model included sources from the third LAT catalog (3FGL: Acero et al. 2015) inside the ROI and which showed TS> 2554 based on an analysis of 1-month of LAT data, for 2015 June.”
- Sensitivity projections for dark matter searches with the Fermi large area telescope (2016, methodology): “In fact, ∼1/3 of the sources in the 3FGL catalog lack firm associations with known counterparts at other wavelengths [53].”
- Limits to dark matter annihilation cross-section from a combined analysis of MAGIC and Fermi-LAT observations of dwarf satellite galaxies (2016, methodology): “The model for each ROI contains the dSph DM intensity template, templates for Galactic and isotropic diffuse backgrounds, and point sources taken from the third LAT source catalog (3FGL) [49] within 15◦ of the ROI center.”
- Modelling the coincident observation of a high-energy neutrino and a bright blazar flare (2018, neutral): “A six-fold increase, compared to the 3FGL catalog value (22), in the 0.”
- The faint radio sky: radio astronomy becomes mainstream (2016, background): “And of the 2,023γ-ray sources in the thirdFermi Large Area Telescope catalogue (3FGL) associated with an astronomical counterpart∼ 85% of the total, and∼ 98% of extragalactic sources, are blazars (Acero et al., 2015).”
- Active galactic nuclei: what’s in a name? (2017, methodology): “For this reason they use conservative statistical thresholds (e.g. AGILE: Pittori et al. 2009; Fermi-LAT 0,1,2,3FGL: Acero et al. 2015, and references therein, where the numbers denote the n-th Fermi-LAT source catalogue; Fermi 1,2,3FHL: The Fermi-LAT Collaboration 2017, and references therein,…”