Catalog of very-high-energy emitting active galactic nuclei at high Galactic latitudes
A.Neronov, D.Semikoz

TL;DR
This paper presents a comprehensive catalog of 175 high-confidence VHE gamma-ray emitting AGN at high Galactic latitudes, including many new detections, and analyzes their luminosity function and spatial density.
Contribution
It provides the first unbiased survey of VHE AGN using Fermi LAT data, expanding the known population and characterizing their properties and distribution.
Findings
90% of VHE AGN are BL Lac objects
175 sources detected, including 71 previously known
The luminosity function indicates a spatial density of (6.5±0.5)e-7 Mpc^-3
Abstract
Large number of Active Galactic Nuclei (AGN) producing Very-High-Energy (VHE) gamma-rays (energies above 100~GeV) has been revealed using observations with Imaging Atmospheric Cherenkov Telescopes (IACTs). However, our knowledge of the VHE emitting AGN population is limited in the absence of an unbiased sky survey. We use long exposure of Fermi Large Area Telescope (LAT) to perform a survey of VHE emitting AGN at Galactic latitudes |b|>10 degrees. We consider clustering of gamma-ray events with energies E>100 GeV around positions of AGN from the 4-th LAT source catalog to select sources detected in the VHE range. The VHE AGN catalog produced in this way contains overall 175 sources detected with high confidence and additional 100 sources detected at more than 3-sigma level. It is 90% complete at the flux limit 1.3e-12 erg/cm2s. Less than half of the source sample (71) are previously…
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Taxonomy
TopicsAstrophysics and Cosmic Phenomena · Photocathodes and Microchannel Plates · Dark Matter and Cosmic Phenomena
