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arXiv · 1503.02664

2FHL: The second Catalog of hard {\it Fermi}-LAT sources

M. Ajello·A. Domínguez·D. Gasparrini·S. Cutini
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Abstract

The {\it Fermi} Large Area Telescope (LAT) has been routinely gathering science data since August 2008, surveying the full sky every three hours. The first Fermi-LAT catalog of sources detected above 10 GeV (1FHL) relied on three years of data to characterize the $>$10 GeV sky. The improved acceptance and point-spread function of the new Pass 8 event reconstruction and classification together with six years of observations now available allow the detection and characterization of sources directly above 50 GeV. This closes the gap between ground-based Cherenkov telescopes, which have excellent sensitivity but small fields of view and short duty cycles, and all-sky observations at GeV energies from orbit. In this contribution we present the second catalog of hard Fermi-LAT sources detected at $>$50\,GeV.

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M. Ajello, A. Domínguez, D. Gasparrini, S. Cutini. 2015-03-09. 2FHL: The second Catalog of hard {\it Fermi}-LAT sources. https://arxiv.org/abs/1503.02664

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