THE FIRST FERMI-LAT CATALOG OF SOURCES ABOVE 10 GeV

By M. Ackermann, M. Ajello, A. Allafort, W. Atwood, L. Baldini, J. Ballet, G. Barbiellini, D. Bastieri, K. Bechtol, A. Belfiore and 149 more. 2013

216 citations recorded by the source corpus.

We present a catalog of γ-ray sources at energies above 10 GeV based on data from the Large Area Telescope (LAT) accumulated during the first 3 yr of the Fermi Gamma-ray Space Telescope mission. The first Fermi-LAT catalog of >10 GeV sources (1FHL) has 514 sources. For each source we present location, spectrum, a measure of variability, and associations with cataloged sources at other wavelengths. We found that 449 (87%) could be associated with known sources, of which 393 (76% of the 1FHL sources) are active galactic nuclei. Of the 27 sources associated with known pulsars, we find 20 (12) to have significant pulsations in the range >10 GeV (>25 GeV). In this work we also report that, at energies above 10 GeV, unresolved sources account for 27% ± 8% of the isotropic γ-ray background, while the unresolved Galactic population contributes only at the few percent level to the Galactic diffuse background. We also highlight the subset of the 1FHL sources that are best candidates for detection at energies above 50–100 GeV with current and future ground-based γ-ray observatories.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/4a4084bbbc5c1c0924127a5f9764848203ad5385

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Citations in the corpus

The Nine Lives of Cosmic Rays in Galaxies (2015, background): “A hadronic emission signature has at last been found in the W44 and IC443 remnants with Fermi -LAT and AGILE (Ackermann et al. 2013b, Cardillo et al. 2014), although it will not constitute firm evidence of the acceleration of CR nuclei until the measurements are extended to well below the pion peak ”
THE SPECTRUM OF ISOTROPIC DIFFUSE GAMMA-RAY EMISSION BETWEEN 100 MeV AND 820 GeV (2014, methodology): “(The demographics of LAT sources detected at energies above 10 GeV are discussed in Ackermann et al. 2013c).”
3FHL: The Third Catalog of Hard Fermi-LAT Sources (2017, methodology): “Adopting a 10 GeV threshold, as was done in the 1FHL catalog (Ackermann et al. 2013), provides the benefits of a narrow PSF, with per-photon angular resolution from 0°.15 at 10 GeV to less than 0°.1 above 35 GeV (68% containment radius averaged over all event types),65 ensuring minimal confusion…”
DEVELOPMENT OF THE MODEL OF GALACTIC INTERSTELLAR EMISSION FOR STANDARD POINT-SOURCE ANALYSIS OF FERMI LARGE AREA TELESCOPE DATA (2016, background): “Ackermann et al. (2013) analyzed the source population to estimate the contribution of unresolved sources to the diffuse Galactic emission above 10 GeV, and found the contribution to be about 2.5% of the interstellar emission for a reference model with a local source density of 3 kpc-3.”
The 2HWC HAWC Observatory Gamma-Ray Catalog (2017, methodology): “…are also searched in the FermiLAT catalogs: the standard 2FGL and 3FGL catalogs (Abdo et al. 2010a; Nolan et al. 2012; Acero et al. 2015), the high energy 1FHL and 2FHL catalogs (Ackermann et al. 2013, 2016), the second pulsar catalogs (Abdo et al. 2013), and the SNR catalog (Acero et al. 2016).”
THE COSMIC EVOLUTION OF FERMI BL LACERTAE OBJECTS (2013, background): “A confirmation of this is already available in the study of the > 10GeV sources detected by Fermi (Ackermann et al. 2013).”
Fermi Large Area Telescope Fourth Source Catalog (2019, unknown): “…cataloge 1451 (Abdo et al. 2010e, 1FGL) 2FGL cataloge 1873 (Nolan et al. 2012, 2FGL) 3FGL cataloge 3033 (Acero et al. 2015, 3FGL) 1FHL cataloge 514 (Ackermann et al. 2013, 1FHL) 2FHL cataloge 360 (Ackermann et al. 2016b, 1FHL) 3FHL cataloge 1556 (Ajello et al. 2017, 1FHL) TeV point-like source…”
THE ORIGIN OF THE EXTRAGALACTIC GAMMA-RAY BACKGROUND AND IMPLICATIONS FOR DARK MATTER ANNIHILATION (2015, methodology): “…section, these models are constrained using blazar data (fluxes, redshifts and photon indices) from Abdo et al. (2010d), the >10GeV logN -logS from Ackermann et al. (2013) and information on the spectral curvature of blazars (Ackermann et al. 2014d) to robustly estimate the integrated emission of…”
A hadronic origin for ultra-high-frequency-peaked BL Lac objects (2014, background): “…al. 2012; Murase et al. 2012) Proton-proton interactions (important in denser environments, such as supernovae remnants or micro-quasars, see e.g. Ackermann et al. 2013b; Romero et al. 2003, respectively) are commonly neglected in blazar hadronic models, because the particle density in the…”
2FHL: THE SECOND CATALOG OF HARD FERMI-LAT SOURCES (2015, methodology): “The approach for automated source association closely follows that used for the 2FGL, 1FHL, 3FGL and 3LAC catalogs (Nolan et al. 2012; Ackermann et al. 2013; Acero et al. 2015; Ackermann et al. 2015).”