Multiwavelength observations of the AGN 1ES 0414+009 with VERITAS, Fermi-LAT, Swift-XRT, and MDM
Creators: name: Aliu, E.
name: Archambault, S.
name: Arlen, T.
name: Aune, T.
name: Beilicke, M.
name: Benbow, W.
name: Bottcher, M.
name: Bouvier, A.
name: Bugaev, V.
name: Cannon, A.
name: Cesarini, A.
name: Ciupik, L.
name: Collins-Hughes, E.
name: Connolly, M. P.
name: Cui, W.
name: Dickherber, R.
name: Dumm, J.
name: Errando, M.
name: Falcone, A.
name: Federici, S.
name: Feng, Q.
name: Finley, J. P.
name: Finnegan, G.
name: Fortson, L.
name: Furniss, A.
name: Galante, N.
name: Gall, D.
name: Godambe, S.
name: Griffin, S.
name: Grube, J.
name: Gyuk, G.
name: Hanna, D.
name: Huan, H.
name: Hughes, G.
name: Hui, C. M.
name: Imran, A.
name: Jameil, O.
name: Kaaret, P.
name: Karlsson, N.
name: Kertzman, M.
name: Kerr, J.
name: Khassen, Y.
name: Kieda, D.
name: Krawczynski, H.
name: Krennrich, F.
name: Lang, M. J.
name: Lee, K.
name: Madhavan, A. S.
name: Majumdar, P.
name: McArthur, S.
name: McCann, A.
name: Moriarty, P.
name: Mukherjee, R.
name: Nelson, T.
name: de Bhroithe, A. O'Faolain
name: Ong, R. A.
name: Orr, M.
name: Otte, A. N.
name: Park, N.
name: Perkins, J. S.
name: Pichel, A.
name: Pohl, M.
name: Quinn, J.
name: Ragan, K.
name: Reynolds, P. T.
name: Roache, E.
name: Ruppel, J.
name: Saxon, D. B.
name: Schroedter, M.
name: Sembroski, G. H.
name: Senturk, G. D.
name: Smith, A. W.
name: Staszak, D.
name: Stroh, M.
name: Telezhinsky, I.
name: Tesic, G.
name: Theiling, M.
name: Thibadeau, S.
name: Tsurusaki, K.
name: Varlotta, A.
name: Vassiliev, V. V.
name: Vivier, M.
name: Wakely, S. P.
name: Ward, J. E.
name: Weinstein, A.
name: Welsing, R.
name: Williams, D. A.
name: Zitzer, B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: We present observations of the BL Lac object 1ES 0414+009 in the &gt;200 GeV gamma-ray band by the VERITAS array of Cherenkov telescopes. 1ES 0414+009 was observed by VERITAS between January 2008 and February 2011, resulting in 56.2 hours of good quality pointed observations. These observations resulted in a detection of 822 events from the source corresponding to a statistical significance of 6.4 standard deviations (6.4 sigma) above the background. The source flux, showing no evidence for variability, is measured as 5.2 +/- 1.1_stat +/- 2.6_sys * 10^-12 photons cm^-2 s^-1 above 200 GeV, equivalent to approximately 2% of the Crab Nebula flux above this energy. The differential photon spectrum from 230 GeV to 850 GeV is well fit by a power law with an photon index of Gamma 3.4 +/- 0.5_stat +/- 0.3_sys and a flux normalization of 1.6 +/- 0.3_stat +/- 0.8_sys * 10^-11 photons cm^-2 s^-1 at 300 GeV. We also present multiwavelength results taken in the optical (MDM), X-ray (Swift-XRT), and GeV (Fermi-LAT) bands and use these results to construct a broadband spectral energy distribution (SED). Modeling of this SED indicates that homogenous one-zone leptonic scenarios are not adequate to describe emission from the system, with a lepto-hadronic model providing a better fit to the data.
description: Accepted for publication in The Astrophysical Journal