2FHL: The Second Catalog of Hard Fermi-LAT Sources

Journal
THE ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
Date Issued
2016
Author(s)
Ackermann, M.
•
Ajello, M.
•
Atwood, W. B.
•
Baldini, L.
•
Ballet, J.
•
Barbiellini, G.
•
Bastieri, D.
•
Becerra Gonzalez, J.
•
Bellazzini, R.
•
Bissaldi, E.
•
Blandford, R. D.
•
Cavazzuti, E.
•
Cecchi, C.
•
Charles, E.
•
Chekhtman, A.
•
Cheung, C. C.
•
Chiang, J.
•
Chiaro, G.
•
Ciprini, S.
•
Focke, W. B.
•
Cohen, J. M.
•
Kamae, T.
•
Cohen-Tanugi, J.
•
Cominsky, L. R.
•
Conrad, J.
•
Cuoco, A.
•
Cutini, S.
•
•
de Angelis, A.
•
de Palma, F.
•
Desiante, R.
•
Fortin, P.
•
Kataoka, J.
•
Di Mauro, M.
•
Di Venere, L.
•
Domínguez, A.
•
Drell, P. S.
•
Franckowiak, A.
•
Fukazawa, Y.
•
Funk, S.
•
Furniss, A. K.
•
Fusco, P.
•
Mitthumsiri, W.
•
Knödlseder, J.
•
Gargano, F.
•
Gasparrini, D.
•
Giglietto, N.
•
Giommi, P.
•
Giordano, F.
•
•
Glanzman, T.
•
Godfrey, G.
•
Grenier, I. A.
•
Grondin, M. -H.
•
Kuss, M.
•
Mizuno, T.
•
Guillemot, L.
•
Guiriec, S.
•
Harding, A. K.
•
Hays, E.
•
Hewitt, J. W.
•
Hill, A. B.
•
Horan, D.
•
•
Hartmann, Dieter
•
La Mura, G.
•
Jogler, T.
•
Moiseev, A. A.
•
Jóhannesson, G.
•
Johnson, A. S.
•
Larsson, S.
•
Latronico, L.
•
Lemoine-Goumard, M.
•
Monzani, M. E.
•
Li, J.
•
Sgrò, C.
•
Li, L.
•
Longo, F.
•
Loparco, F.
•
Lott, B.
•
Lovellette, M. N.
•
Lubrano, P.
•
Madejski, G. M.
•
Maldera, S.
•
Manfreda, A.
•
Morselli, A.
•
Siskind, E. J.
•
Mayer, M.
•
Mazziotta, M. N.
•
Michelson, P. F.
•
Mirabal, N.
•
Moskalenko, I. V.
•
Murgia, S.
•
Nuss, E.
•
Ohsugi, T.
•
Omodei, N.
•
Bloom, E. D.
•
Spada, F.
•
•
Orlando, E.
•
Ormes, J. F.
•
Paneque, D.
•
Perkins, J. S.
•
Pesce-Rollins, M.
•
Petrosian, V.
•
Piron, F.
•
Pivato, G.
•
Porter, T. A.
•
Spandre, G.
•
Bonino, R.
•
Rainò, S.
•
Rando, R.
•
Razzano, M.
•
Razzaque, S.
•
Reimer, A.
•
Reimer, O.
•
Reposeur, T.
•
Romani, R. W.
•
Sánchez-Conde, M.
•
Spinelli, P.
•
Saz Parkinson, P. M.
•
Bottacini, E.
•
Schmid, J.
•
Schulz, A.
•
Suson, D. J.
•
Tajima, H.
•
Takahashi, H.
•
Brandt, T. J.
•
Takahashi, M.
•
Favuzzi, C.
•
Takahashi, T.
•
Thayer, J. B.
•
Thompson, D. J.
•
Tibaldo, L.
•
Torres, D. F.
•
Tosti, G.
•
Troja, E.
•
Vianello, G.
•
Wood, K. S.
•
Bregeon, J.
•
Fegan, S. J.
•
Wood, M.
•
Yassine, M.
•
Zaharijas, G.
•
Zimmer, S.
•
Bruel, P.
•
Buehler, R.
•
Buson, S.
•
Caliandro, G. A.
•
Cameron, R. A.
•
Caputo, R.
•
Ferrara, E. C.
•
Caragiulo, M.
•
DOI
10.3847/0067-0049/222/1/5
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 Pass 8 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-LAT on orbit and the observations performed at higher energies by Cherenkov telescopes from the ground.
Volume
222
Issue
1
Start page
5
File(s)
Loading...
Thumbnail Image
Name

Ackermann_2016_ApJS_222_5.pdf

Description
PDF editoriale
Size

2.26 MB

Format

Adobe PDF

Checksum (MD5)

5e81fc513cdfb5b0b4f863dbd910cb0e