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The First Fermi-LAT Catalog of Sources Above 10 GeV

Markus Ackermann Marco Ajello A. Allafort W. B. Atwood Luca Baldini Jean Ballet 1 Guido Barbiellini D. Bastieri K. Bechtol A. Belfiore R. Bellazzini E. Bernieri E. Bissaldi E. D. Bloom E. Bonamente T. J. Brandt 2 J. Bregeon M. Brigida Pascal Bruel 3 R. Buehler T. H. Burnett S. Buson G. A. Caliandro R. A. Cameron R. Campana P. A. Caraveo J. M. Casandjian 1 E. Cavazzuti C. Cecchi E. Charles R. C. G. Chaves A. Chekhtman C. C. Cheung J. Chiang G. Chiaro S. Ciprini R. Claus J. Cohen-Tanugi L. R. Cominsky J. Conrad S. Cutini F. d'Ammando A. de Angelis F. de Palma C. D. Dermer R. Desiante S. W. Digel L. Di Venere P. S. Drell A. Drlica-Wagner C. Favuzzi S. J. Fegan 3 E. C. Ferrara W. B. Focke P. Fortin 3 A. Franckowiak S. Funk P. Fusco 4 F. Gargano 4 D. Gasparrini N. Gehrels S. Germani N. Giglietto P. Giommi F. Giordano M. Giroletti G. Godfrey G. A. Gomez-Vargas I. A. Grenier 1 S. Guiriec D. Hadasch 5 Y. Hanabata A. K. Harding M. Hayashida E. Hays J. Hewitt A. B. Hill 6 D. Horan 3 R. E. Hughes T. Jogler G. Jóhannesson A. S. Johnson T. J. Johnson W. N. Johnson T. Kamae J. Kataoka T. Kawano J. Knödlseder 2 M. Kus J. Lande S. Larsson L. Latronico M. Lemoine-Goumard 7 F. Longo F. Loparco 4 B. Lott 7 M. N. Lovellette P. Lubrano E. Massaro M. Mayer M. N. Mazziotta J. E. Mcenery J. Mehault 8 P. F. Michelson T. Mizuno A. A. Moiseev M. E. Monzani A. Morselli I. V. Moskalenko S. Murgia R. Nemmen E. Nuss 8 T. Ohsugi A. Okumura M. Orienti J. F. Ormes D. Paneque J. S. Perkins M. Pesce-Rollins F. Piron 8 G. Pivato T.A. Porter S. Rainò M. Razzano A. Reimer O. Reimer T. Reposeur 7 S. Ritz R. W. Romani M. Roth P. M. Saz Parkinson A. Schulz C. Sgrò E. J. Siskind David Stanley Smith 7 G. Spandre P. Spinelli Łukasz Stawarz A. W. Strong D. J. Suson H. Takahashi J. G. Thayer J. B. Thayer D. J. Thompson L. Tibaldo M. Tinivella D. F. Torres G. Tosti E. Troja Y. Uchiyama T. L. Usher J. Vandenbroucke V. Vasileiou 8 G. Vianello V. Vitale M. Werner B. L. Winer K. S. Wood M. Wood
Abstract : We present a catalog of gamma-ray sources at energies above 10 GeV based on data from the Large Area Telescope (LAT) accumulated during the first three years of the Fermi Gamma-ray Space Telescope mission. The first Fermi-LAT catalog of >10GeV 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 >10GeV (>25GeV). In this work we also report that, at energies above 10 GeV, unresolved sources account for 27+/-8 % of the isotropic gamma-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 gamma-ray observatories.
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Markus Ackermann, Marco Ajello, A. Allafort, W. B. Atwood, Luca Baldini, et al.. The First Fermi-LAT Catalog of Sources Above 10 GeV. Astrophysical Journal Supplement, American Astronomical Society, 2013, 209, pp.2. ⟨10.1088/0067-0049/209/2/34⟩. ⟨in2p3-00923344⟩



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