THE SECOND CATALOG OF ACTIVE GALACTIC NUCLEI DETECTED BY THE FERMI LARGE AREA TELESCOPE

Ackermann M, Ajello M, Allafort A, Antolini E, Atwood WB, Axelsson M, Baldini L, Ballet J, Barbiellini G, Bastieri D, Bechtol K, Bellazzini R, Berenji B, Blandford RD, Bloom ED, Bonamente E, Borgland AW, Bottacini E, Bouvier A, Bregeon J, Brigida M, Bruel P, Buehler R, Burnett TH, Buson S, Caliandro GA, Cameron RA, Caraveo PA, Casandjian JM, Cavazzuti E, Cecchi C, Charles E, Cheung CC, Chiang J, Ciprini S, Claus R, Cohen-Tanugi J, Conrad J, Costamante L, Cutini S, De Angelis A, De Palma F, Dermer CD, Digel SW, Do Couto E Silva E, Drell PS, Dubois R, Escande L, Favuzzi C, Fegan SJ, Ferrara EC, Finke J, Focke WB, Fortin P, Frailis M, Fukazawa Y, Funk S, Fusco P, Gargano F, Gasparrini D, Gehrels N, Germani S, Giebels B, Giglietto N, Giommi P, Giordano F, Giroletti M, Glanzman T, Godfrey G, Grenier IA, Grove JE, Guiriec S, Gustafsson M, Hadasch D, Hayashida M, Hays E, Healey SE, Horan D, Hou X, Hughes RE, Iafrate G, Johannesson G, Johnson AS, Johnson WN, Kamae T, Katagiri H, Kataoka J, Knodlseder J, Kuss MW, Lande J, Larsson S, Latronico L, Longo F, Loparco F, Lott B, Lovellette MN, Lubrano P, Madejski GM, Mazziotta MN, Mcconville W, Mcenery JE, Michelson PF, Mitthumsiri W, Mizuno T, Moiseev AA, Monte C, Monzani ME, Moretti E, Morselli A, Moskalenko IV, Murgia S, Nakamori T, Naumann-Godo M, Nolan PL, Norris JP, Nuss E, Ohno M, Ohsugi T, Okumura A, Omodei N, Orienti M, Orlando E, Ormes JF, Ozaki M, Paneque D, Parent D, Pesce-Rollins M, Pierbattista M, Piranomonte S, Piron F, Pivato G, Porter TA, Raino S, Rando R, Razzano M, Razzaque S, Reimer A, Reimer O, Ritz S, Rochester LS, Romani RW, Roth M, Sanchez DA, Sbarra C, Scargle JD, Schalk TL, Sgro C, Shaw MS, Siskind EJ, Spandre G, Spinelli P, Strong AW, Suson DJ, Tajima H, Takahashi HH, Takahashi T, Tanaka T, Thayer JG, Thayer JB, Thompson DJ, Tibaldo L, Tinivella M, Torres DF, Tosti G, Troja E, Uchiyama Y, Vandenbroucke J, Vasileiou V, Vianello G, Vitale V, Waite AP, Wallace E, Wang P, Winer BL, Wood DL, Wood KS, Zimmer S (2011)

Publication Type: Journal article

Publication year: 2011

Journal

Book Volume: 743

Journal Issue: 2

DOI: 10.1088/0004-637X/743/2/171

Abstract

The second catalog of active galactic nuclei (AGNs) detected by the Fermi Large Area Telescope (LAT) in two years of scientific operation is presented. The second LAT AGN catalog (2LAC) includes 1017 gamma-ray sources located at high Galactic latitudes (vertical bar b vertical bar > 10 degrees) that are detected with a test statistic (TS) greater than 25 and associated statistically with AGNs. However, some of these are affected by analysis issues and some are associated with multiple AGNs. Consequently, we define a Clean Sample which includes 886 AGNs, comprising 395 BL Lacertae objects (BL Lac objects), 310 flat-spectrum radio quasars (FSRQs), 157 candidate blazars of unknown type (i.e., with broadband blazar characteristics but with no optical spectral measurement yet), 8 misaligned AGNs, 4 narrow-line Seyfert 1 (NLS1s), 10 AGNs of other types, and 2 starburst galaxies. Where possible, the blazars have been further classified based on their spectral energy distributions (SEDs) as archival radio, optical, and X-ray data permit. While almost all FSRQs have a synchrotron-peak frequency < 10(14) Hz, about half of the BL Lac objects have a synchrotron-peak frequency > 10(15) Hz. The 2LAC represents a significant improvement relative to the first LAT AGN catalog (1LAC), with 52% more associated sources. The full characterization of the newly detected sources will require more broadband data. Various properties, such as gamma-ray fluxes and photon power-law spectral indices, redshifts, gamma-ray luminosities, variability, and archival radio luminosities and their correlations are presented and discussed for the different blazar classes. The general trends observed in 1LAC are confirmed.

Authors with CRIS profile

Involved external institutions

Stanford University United States (USA) (US) National Institute for Nuclear Physics / Istituto Nazionale di Fisica Nucleare (INFN) Italy (IT) University of California Santa Cruz United States (USA) (US) Stockholm University / Stockholms universitet Sweden (SE) University of Paris 7 - Denis Diderot / Université Paris VII Denis Diderot France (FR) Politecnico di Bari Italy (IT) École Polytechnique - Université Paris-Saclay France (FR) University of Washington United States (USA) (US) Institut de Ciències de l'Espai (ICE) Spain (ES) National Institute for Astrophysics / Istituto Nazionale Astrofisica (INAF) Italy (IT) Italian Space Agency / Agenzia Spaziale Italiana (ASI) Italy (IT) Università degli Studi di Perugia Italy (IT) University of Montpellier / Université Montpellier France (FR) U.S. Naval Research Laboratory United States (USA) (US) Université Bordeaux 1, Sciences et Technologies France (FR) National Aeronautics and Space Administration (NASA) United States (USA) (US) University of Udine / Università degli Studi di Udine Italy (IT) Hiroshima University / 広島大学 Japan (JP) University of Alabama in Huntsville (UAH) United States (USA) (US) Waseda University / 早稲田大学 Japan (JP) National Academy of Sciences United States (USA) (US) AlbaNova University Centre / Kungliga Tekniska Högskolan AlbaNova Universitetscentrum Sweden (SE) Ohio State University United States (USA) (US) University of Iceland (UI) / Háskóli Íslands Iceland (IS) Ibaraki University / 茨城大学 Japan (JP) Institut de Recherche en Astrophysique et Planétologie (IRAP) France (FR) University of Maryland United States (USA) (US) Boise State University United States (USA) (US) Japan Aerospace eXploration Agency (JAXA) Japan (JP) University of Denver United States (USA) (US) George Mason University United States (USA) (US) University of Padua / Universita degli Studi di Padova Italy (IT) Max-Planck-Institut für Kernphysik (MPIK) / Max Planck Institute for Nuclear Physics Germany (DE) NYCB Real-Time Computing, Inc. United States (USA) (US) Max-Planck-Institut für extraterrestrische Physik (MPE) / Max Planck Institute for Extraterrestrial Physics Germany (DE) Purdue University Northwest / Purdue University Calumet United States (USA) (US) Praxis, Inc. United States (USA) (US)

How to cite

APA:

Ackermann, M., Ajello, M., Allafort, A., Antolini, E., Atwood, W.B., Axelsson, M.,... Zimmer, S. (2011). THE SECOND CATALOG OF ACTIVE GALACTIC NUCLEI DETECTED BY THE FERMI LARGE AREA TELESCOPE. Astrophysical Journal, 743(2). https://doi.org/10.1088/0004-637X/743/2/171

MLA:

Ackermann, Markus, et al. "THE SECOND CATALOG OF ACTIVE GALACTIC NUCLEI DETECTED BY THE FERMI LARGE AREA TELESCOPE." Astrophysical Journal 743.2 (2011).

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