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Very-High-Energy gamma-Ray Observations of the Blazar 1ES 2344+514 with VERITAS

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dc.contributor.authorAllen, C.
dc.contributor.authorArchambault, S.
dc.contributor.authorArcher, A.
dc.contributor.authorBenbow, W.
dc.contributor.authorBird, R.
dc.contributor.authorBourbeau, E.
dc.contributor.authorBrose, R.
dc.contributor.authorBuchovecky, M.
dc.contributor.authorBuckley, J. H.
dc.contributor.authorBugaev, V.
dc.contributor.authorCardenzana, J. V.
dc.contributor.authorCerruti, M.
dc.contributor.authorChen, X.
dc.contributor.authorChristiansen, J. L.
dc.contributor.authorConnolly, M. P.
dc.contributor.authorCui, W.
dc.contributor.authorDaniel, M. K.
dc.contributor.authorEisch, J. D.
dc.contributor.authorFalcone, A.
dc.contributor.authorFeng, Q.
dc.contributor.authorFernandez-Alonso, M.
dc.contributor.authorFinley, J. P.
dc.contributor.authorFleischhack, H.
dc.contributor.authorFlinders, A.
dc.contributor.authorFortson, L.
dc.contributor.authorFurniss, A.
dc.contributor.authorGillanders, G. H.
dc.contributor.authorGriffin, S.
dc.contributor.authorGrube, J.
dc.contributor.authorHuetten, M.
dc.contributor.authorHakansson, N.
dc.contributor.authorHanna, D.
dc.contributor.authorHervet, O.
dc.contributor.authorHolder, J.
dc.contributor.authorHughes, G.
dc.contributor.authorHumensky, T. B.
dc.contributor.authorJohnson, C. A.
dc.contributor.authorKaaret, P.
dc.contributor.authorKar, P.
dc.contributor.authorKelley-Hoskins, N.
dc.contributor.authorKertzman, M.
dc.contributor.authorKieda, D.
dc.contributor.authorKrause, M.
dc.contributor.authorKrennrich, F.
dc.contributor.authorKumar, S.
dc.contributor.authorLang, M. J.
dc.contributor.authorMaier, G.
dc.contributor.authorMcArthur, S.
dc.contributor.authorMcCann, A.
dc.contributor.authorMeagher, K.
dc.contributor.authorMoriarty, P.
dc.contributor.authorMukherjee, R.
dc.contributor.authorNguyen, T.
dc.contributor.authorNieto, D.
dc.contributor.authorO'Brien, S.
dc.contributor.authorde Bhroithe, A. O'Faolain
dc.contributor.authorOng, R. A.
dc.contributor.authorOtte, A. N.
dc.contributor.authorPark, N.
dc.contributor.authorPetrashyk, A.
dc.contributor.authorPichel, A.
dc.contributor.authorPohl, M.
dc.contributor.authorPopkow, A.
dc.contributor.authorPueschel, E.
dc.contributor.authorQuinn, J.
dc.contributor.authorRagan, K.
dc.contributor.authorReynolds, P. T.
dc.contributor.authorRichards, G. T.
dc.contributor.authorRoache, E.
dc.contributor.authorRovero, A. C.
dc.contributor.authorRulten, C.
dc.contributor.authorSadeh, I.
dc.contributor.authorSantander, M.
dc.contributor.authorSembroski, G. H.
dc.contributor.authorShahinyan, K.
dc.contributor.authorTelezhinsky, I.
dc.contributor.authorTucci, J. V.
dc.contributor.authorTyler, J.
dc.contributor.authorWakely, S. P.
dc.contributor.authorWeinstein, A.
dc.contributor.authorWilhelm, A.
dc.contributor.authorWilliams, D. A.
dc.contributor.otherCalifornia State University System
dc.contributor.otherCalifornia Polytechnic State University San Luis Obispo
dc.contributor.otherMcGill University
dc.contributor.otherWashington University (WUSTL)
dc.contributor.otherHarvard University
dc.contributor.otherSmithsonian Institution
dc.contributor.otherUniversity of California System
dc.contributor.otherUniversity of California Los Angeles
dc.contributor.otherUniversity of Potsdam
dc.contributor.otherHelmholtz Association
dc.contributor.otherDeutsches Elektronen-Synchrotron (DESY)
dc.contributor.otherIowa State University
dc.contributor.otherOllscoil na Gaillimhe-University of Galway
dc.contributor.otherPurdue University System
dc.contributor.otherPurdue University
dc.contributor.otherPurdue University West Lafayette Campus
dc.contributor.otherTsinghua University
dc.contributor.otherPennsylvania Commonwealth System of Higher Education (PCSHE)
dc.contributor.otherPennsylvania State University
dc.contributor.otherPennsylvania State University - University Park
dc.contributor.otherInstituto de Astronomia y Fisica del Espacio (IAFE)
dc.contributor.otherUtah System of Higher Education
dc.contributor.otherUniversity of Utah
dc.contributor.otherUniversity of Minnesota System
dc.contributor.otherUniversity of Minnesota Twin Cities
dc.contributor.otherCalifornia State University East Bay
dc.contributor.otherStevens Institute of Technology
dc.contributor.otherUniversity of California Santa Cruz
dc.contributor.otherUniversity of Delaware
dc.contributor.otherColumbia University
dc.contributor.otherUniversity of Iowa
dc.contributor.otherDePauw University
dc.contributor.otherUniversity System of Georgia
dc.contributor.otherGeorgia Institute of Technology
dc.contributor.otherUniversity College Dublin
dc.contributor.otherUniversity of Chicago
dc.contributor.otherCork Institute of Technology
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.date.accessioned2019-07-08T23:20:36Z
dc.date.available2019-07-08T23:20:36Z
dc.date.copyright2017
dc.date.issued2017-07-17
dc.description.abstractWe present very-high-energy gamma-ray observations of the BL Lac object 1ES 2344+514 taken by the Very Energetic Radiation Imaging Telescope Array System between 2007 and 2015. 1ES 2344+514 is detected with a statistical significance above the background of 20.8 sigma in 47.2 h (livetime) of observations, making this the most comprehensive very-high-energy study of 1ES 2344+514 to date. Using these observations, the temporal properties of 1ES 2344+514 are studied on short and long times-scales. We fit a constant-flux model to nightly and seasonally binned light curves and apply a fractional variability test to determine the stability of the source on different time-scales. We reject the constant-flux model for the 2007-2008 and 2014-2015 nightly binned light curves and for the long-term seasonally binned light curve at the > 3 sigma level. The spectra of the time-averaged emission before and after correction for attenuation by the extragalactic background light are obtained. The observed time-averaged spectrum above 200 GeV is satisfactorily fitted (x(2)/NDF = 7.89/6) by a power-law function with an index Gamma = 2.46 +/- 0.06(stat) +/- 0.20(sys) and extends to at least 8 TeV. The extragalactic-backgroundlight-deabsorbed spectrum is adequately fit (x(2)/NDF = 6.73/6) by a power-law function with an index Gamma = 2.15 +/- 0.06(stat) +/- 0.20(sys) while an F-test indicates that the power law with an exponential cut-off function provides a marginally better fit (x(2)/NDF = 2.56/5) at the 2.1 sigma level. The source location is found to be consistent with the published radio location and its spatial extent is consistent with a point source.en_US
dc.format.mimetypeapplication/pdf
dc.identifier.citationAllen, C., et al. (2017): Very-High-Energy γ-Ray Observations of the Blazar 1ES 2344+514 with VERITAS. Monthly Notices of the Royal Astronomical Society, 471(2). DOI: https://doi.org/10.1093/mnras/stx1756
dc.identifier.doi10.1093/mnras/stx1756
dc.identifier.orcidhttps://orcid.org/0000-0002-6324-5772
dc.identifier.orcidhttps://orcid.org/0000-0002-2126-2419
dc.identifier.orcidhttps://orcid.org/0000-0001-7891-699X
dc.identifier.orcidhttps://orcid.org/0000-0003-3343-0755
dc.identifier.orcidhttps://orcid.org/0000-0002-8053-7910
dc.identifier.orcidhttps://orcid.org/0000-0002-5955-6383
dc.identifier.orcidhttps://orcid.org/0000-0001-7861-1707
dc.identifier.orcidhttps://orcid.org/0000-0001-6674-4238
dc.identifier.orcidhttps://orcid.org/0000-0002-1432-7771
dc.identifier.orcidhttps://orcid.org/0000-0001-7297-8217
dc.identifier.orcidhttps://orcid.org/0000-0002-0794-8780
dc.identifier.orcidhttps://orcid.org/0000-0002-4855-2694
dc.identifier.orcidhttps://orcid.org/0000-0003-1387-8915
dc.identifier.orcidhttps://orcid.org/0000-0002-8312-6930
dc.identifier.orcidhttps://orcid.org/0000-0002-4837-5253
dc.identifier.orcidhttps://orcid.org/0000-0003-4785-0101
dc.identifier.orcidhttps://orcid.org/0000-0002-9417-2318
dc.identifier.orcidhttps://orcid.org/0000-0003-3967-1533
dc.identifier.urihttp://ir.ua.edu/handle/123456789/5914
dc.languageEnglish
dc.language.isoen_US
dc.publisherOxford University Press
dc.rights.holderThe Authors
dc.subjectastroparticle physics
dc.subjectBL Lacertae objects: individual: 1ES 2344+514=VERJ2347+517
dc.subjectgamma-rays: galaxies
dc.subjectACTIVE GALACTIC NUCLEI
dc.subjectBL-LACERTAE OBJECTS
dc.subjectBACKGROUND-RADIATION
dc.subjectX-RAY
dc.subjectEMISSION
dc.subjectRADIO
dc.subjectCONSTRAINTS
dc.subjectVARIABILITY
dc.subjectTELESCOPE
dc.subjectSPECTRUM
dc.subjectAstronomy & Astrophysics
dc.titleVery-High-Energy gamma-Ray Observations of the Blazar 1ES 2344+514 with VERITASen_US
dc.typetext
dc.typeArticle

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