Upper limits from five years of blazar observations with the VERITAS Cherenkov Telescopes
- Archambault, S.
- Archer, A.
- Chen, X.
- Ciupik, L.
- Connolly, M. P.
- Cui, W.
- Eisch, J. D.
- Errando, M.
- Falcone, A.
- Feng, Q.
- Finley, J. P.
- Fleischhack, H.
- Benbow, W.
- Fortin, P.
- Fortson, L.
- Furniss, A.
- Gillanders, G. H.
- Griffin, S.
- Grube, J.
- Gyuk, G.
- Hütten, M.
- Håkansson, N.
- Hanna, D.
- Bird, R.
- Holder, J.
- Humensky, T. B.
- Johnson, C. A.
- Kaaret, P.
- Kar, P.
- Kelley-Hoskins, N.
- Kertzman, M.
- Kieda, D.
- Krause, Maria
- Krennrich, F.
- Biteau, J.
- Kumar, S.
- Lang, M. J.
- Maier, G.
- McArthur, S.
- McCann, A.
- Meagher, K.
- Moriarty, P.
- Mukherjee, R.
- Nguyen, T.
- Nieto, D.
- Buchovecky, M.
- O’Faoláin de Bhróit, A.
- Ong, R. A.
- Otte, A. N.
- Park, N.
- Perkins, J. S.
- Pichel, A.
- Pohl, Martin
- Popkow, A.
- Pueschel, E.
- Quinn, J.
- Buckley, J. H.
- Ragan, K.
- Reynolds, P. T.
- Richards, G. T.
- Roache, E.
- Rovero, A. C.
- Santander, M.
- Sembroski, G. H.
- Shahinyan, K.
- Smith, A. W.
- Staszak, D.
- Bugaev, V.
- Telezhinsky, I.
- Tucci, J. V.
- Tyler, J.
- Vincent, S.
- Wakely, S. P.
- Weiner, O. M.
- Weinstein, A.
- Williams, D. A.
- Zitzer, B.
- Fumagalli, M.
- Byrum, K.
- Prochaska, J. X.
- VERITAS Collaboration
- Cerruti, M.
DOIAbstract
Between the beginning of its full-scale scientific operations in 2007 and 2012, the VERITAS Cherenkov telescope array observed more than 130 blazars; of these, 26 were detected as very-high-energy (VHE; E > 100 GeV) γ-ray sources. In this work, we present the analysis results of a sample of 114 undetected objects. The observations constitute a total live-time of ~570 hr. The sample includes several unidentified Fermi-Large Area Telescope (LAT) sources (located at high Galactic latitude) as well as all the sources from the second Fermi-LAT catalog that are contained within the field of view of the VERITAS observations. We have also performed optical spectroscopy measurements in order to estimate the redshift of some of these blazars that do ...
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