| Title: | 2FHL : THE SECOND CATALOG OF HARD FERMI-LAT SOURCES |
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| Authors: | ID Ackermann, M. (Author)
ID Zaharijas, Gabrijela, UNG (Author)
ID Fermi LAT, Collaboration (Author) |
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| Files: |
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| Language: | English |
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| Work type: | Not categorized |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | UNG - University of Nova Gorica
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| Abstract: | We present a catalog of sources detected above 50 GeV by the Fermi-Large Area Telescope (LAT) in 80 months of data. The newly delivered Pass8 event-level analysis allows the detection and characterization of sources in the 50 GeV–2 TeV energy range. In this energy band, Fermi-LAT has detected 360 sources, which constitute the second catalog of hard Fermi-LAT sources (2FHL). The improved angular resolution enables the precise localization of point sources (∼1 7 radius at 68% C.L.) and the detection and characterization of spatially extended sources. We find that 86% of the sources can be associated with counterparts at other wavelengths, of which the majority (75%) are active galactic nuclei and the rest (11%) are Galactic sources. Only 25% of the 2FHL sources have been previously detected by Cherenkov telescopes, implying that the 2FHL provides a reservoir of candidates to be followed up at very high energies. This work closes the energy gap between the observations performed at GeV energies by Fermi-LATon orbit and the observations performed at higher energies by Cherenkov telescopes from the ground. |
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| Keywords: | catalogs – gamma-rays |
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| Publication version: | Version of Record |
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| Year of publishing: | 2016 |
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| Number of pages: | 19 |
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| Numbering: | 222, 1 |
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| PID: | 20.500.12556/RUNG-2108 |
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| COBISS.SI-ID: | 4145147 |
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| DOI: | doi:10.3847/0067-0049/222/1/5 |
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| NUK URN: | URN:SI:UNG:REP:IGL331GF |
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| Publication date in RUNG: | 25.02.2016 |
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| Views: | 5181 |
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| Downloads: | 0 |
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