2FHL: The SECOND CATALOG of HARD FERMI-LAT SOURCES

Ackermann M, Ajello M, Atwood WB, Baldini L, Ballet J, Barbiellini G, Bastieri D, Gonzalez JB, Bellazzini R, Bissaldi E, Blandford RD, Bloom ED, Bonino R, Bottacini E, Brandt TJ, Bregeon J, Bruel P, Buehler R, Buson S, Caliandro GA, Cameron RA, Caputo R, Caragiulo M, Caraveo PA, Cavazzuti E, Cecchi C, Charles E, Chekhtman A, Cheung CC, Chiang J, Chiaro G, Ciprini S, Cohen JM, Cohen-Tanugi J, Cominsky LR, Conrad J, Cuoco A, Cutini S, D'Ammando F, De Angelis A, De Palma F, Desiante R, Di Mauro M, Di Venere L, Dominguez A, Drell PS, Favuzzi C, Fegan SJ, Ferrara EC, Focke WB, Fortin P, Franckowiak A, Fukazawa Y, Funk S, Furniss AK, Fusco P, Gargano F, Gasparrini D, Giglietto N, Giommi P, Giordano F, Giroletti M, Glanzman T, Godfrey G, Grenier IA, Grondin MH, Guillemot L, Guiriec S, Harding AK, Hays E, Hewitt JW, Hill AB, Horan D, Iafrate G, Hartmann D, Jogler T, Johannesson G, Johnson AS, Kamae T, Kataoka J, Knoedlseder J, Kuss M, La Mura G, Larsson S, Latronico L, Lemoine-Goumard M, Li J, Li L, Longo F, Loparco F, Lott B, Lovellette MN, Lubrano P, Madejski GM, Maldera S, Manfreda A, Mayer M, Mazziotta MN, Michelson PF, Mirabal N, Mitthumsiri W, Mizuno T, Moiseev AA, Monzani ME, Morselli A, Moskalenko IV, Murgia S, Nuss E, Ohsugi T, Omodei N, Orienti M, Orlando E, Ormes JF, Paneque D, Perkins JS, Pesce-Rollins M, Petrosian V, Piron F, Pivato G, Porter TA, Raino S, Rando R, Razzano M, Razzaque S, Reimer A, Reimer O, Reposeur T, Romani RW, Sanchez-Conde M, Parkinson PMS, Schmid J, Schulz A, Sgro C, Siskind EJ, Spada F, Spandre G, Spinelli P, Suson DJ, Tajima H, Takahashi H, Takahashi M, Takahashi T, Thayer JB, Thompson DJ, Tibaldo L, Torres DF, Tosti G, Troja E, Vianello G, Wood KS, Wood M, Yassine M, Zaharijas G, Zimmer S (2016)

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2016

Journal

Publisher: American Astronomical Society

Book Volume: 222

Article Number: 5

Journal Issue: 1

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.

Authors with CRIS profile

Involved external institutions

National Institute for Astrophysics / Istituto Nazionale Astrofisica (INAF) Italy (IT) Spanish National Research Council / Consejo Superior de Investigaciones Científicas (CSIC) Spain (ES) National Institute for Nuclear Physics / Istituto Nazionale di Fisica Nucleare (INFN) Italy (IT) University of Montpellier / Université Montpellier France (FR) Stockholm University / Stockholms universitet Sweden (SE) Max-Planck-Institut für Kernphysik (MPIK) / Max Planck Institute for Nuclear Physics Germany (DE) Japan Aerospace eXploration Agency (JAXA) Japan (JP) Max-Planck-Institut für Physik (Werner-Heisenberg-Institut, MPP) / Max Planck Institute for Physics Germany (DE) University of Paris 7 - Denis Diderot / Université Paris VII Denis Diderot France (FR) Stanford University United States (USA) (US) University of California Irvine United States (USA) (US) Mahidol University / มหาวิทยาลัยมหิดล Thailand (TH) University of Johannesburg South Africa (ZA) National Aeronautics and Space Administration (NASA) United States (USA) (US) Université Bordeaux 1, Sciences et Technologies France (FR) AlbaNova University Centre / Kungliga Tekniska Högskolan AlbaNova Universitetscentrum Sweden (SE) University of Tokyo Japan (JP) University of Padua / Universita degli Studi di Padova Italy (IT) Clemson University United States (USA) (US) University of North Florida (UNF) United States (USA) (US) École Polytechnique - Université Paris-Saclay France (FR) Harvard University United States (USA) (US) Italian Space Agency / Agenzia Spaziale Italiana (ASI) Italy (IT) Hiroshima University Japan (JP) U.S. Naval Research Laboratory United States (USA) (US) University of California Santa Cruz United States (USA) (US) University of Orléans / Université d'Orléans France (FR) National Center for Scientific Research / Centre national de la recherche scientifique (CNRS) France (FR) University of Udine / Università degli Studi di Udine Italy (IT) NYCB Real-Time Computing, Inc. United States (USA) (US) Sonoma State University United States (USA) (US) George Mason University United States (USA) (US) University of Iceland (UI) / Háskóli Íslands Iceland (IS) Deutsches Elektronen-Synchrotron DESY Germany (DE) University of Pisa / Università di Pisa (UniPi) Italy (IT) University of Maryland United States (USA) (US) University of Denver United States (USA) (US) Purdue University Northwest / Purdue University Calumet United States (USA) (US) Waseda University / 早稲田大学 Japan (JP)

How to cite

APA:

Ackermann, M., Ajello, M., Atwood, W.B., Baldini, L., Ballet, J., Barbiellini, G.,... Zimmer, S. (2016). 2FHL: The SECOND CATALOG of HARD FERMI-LAT SOURCES. Astrophysical Journal Supplement Series, 222(1). https://dx.doi.org/10.3847/0067-0049/222/1/5

MLA:

Ackermann, M., et al. "2FHL: The SECOND CATALOG of HARD FERMI-LAT SOURCES." Astrophysical Journal Supplement Series 222.1 (2016).

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