Observation of very high energy gamma rays from the AGN 1ES 2344+514 in a low emission state with the MAGIC telescope
- Albert, J.
- Aliu, E.
- Anderhub, H.
- Antoranz, P.
- Armada, A.
- Baixeras, C.
- Barrio, J. A.
- Bartko, H.
- Bastieri, D.
- Becker, J. K.
- Bednarek, W.
- Berger, K.
- Bigongiari, C.
- Biland, A.
- Bock, R. K.
- Bordas, P.
- Bosch-Ramon, V.
- Bretz, T.
- Britvitch, I.
- Camara, M.
- Carmona, E.
- Chilingarian, A.
- Ciprini, S.
- Coarasa, J. A.
- Commichau, S.
- Contreras, J. L.
- Cortina, J.
- Costado, M. T.
- Curtef, V.
- Danielyan, V.
- Dazzi, F.
- De Angelis, A.
- Delgado, C.
- De Los Reyes, R.
- De Lotto, B.
- Domingo-Santamar\ueda, E.
- Dorner, D.
- Doro, M.
- Errando, M.
- Fagiolini, M.
- De, Angelis
- Ferenc, D.
- Fern\ue1ndez, E.
- Firpo, R.
- Flix, J.
- Fonseca, M. V.
- Font, L.
- Fuchs, M.
- Galante, N.
- Garc\u13aa-L\uf3pez, R.
- Garczarczyk, M.
- Gaug, M.
- Giller, M.
- Goebel, F.
- Hakobyan, D.
- Hayashida, M.
- Hengstebeck, T.
- Herrero, A.
- H\uf6hne, D.
- Hose, J.
- Hsu, C. C.
- Jacon, P.
- Jogler, T.
- Kalekin, O.
- Kosyra, R.
- Kranich, D.
- Kritzer, R.
- Laille, A.
- Liebing, P.
- Lindfors, E.
- Lombardi, S.
- Longo, F.
- Lopez, J.
- L\uf3pez, M.
- Lorenz, E.
- Majumdar, P.
- Maneva, G.
- Mannheim, K.
- Mansutti, O.
- Mariotti, M.
- Mart\uednez, M.
- Mazin, D.
- Merck, C.
- Meucci, M.
- Meyer, M.
- Miranda, J. M.
- Mirzoyan, R.
- Mizobuchi, S.
- Moralejo, A.
- Nilsson, K.
- Ninkovic, J.
- On\uf1a-Wilhelmi, E.
- Otte, N.
- Oya, I.
- Paneque, D.
- Panniello, M.
- Paoletti, R.
- Paredes, J. M.
- Pasanen, M.
- Pascoli, D.
- Pauss, F.
- Pegna, R.
- Persic, M.
- Peruzzo, L.
- Piccioli, A.
- Poller, M.
- Prandini, E.
- Puchades, N.
- Raymers, A.
- Rhode, W.
- Rib\uf3, M.
- Rico, J.
- Rissi, M.
- Robert, A.
- R\ufcgamer, S.
- Saggion, A.
- S\ue1nchez, A.
- Sartori, P.
- Scalzotto, V.
- Scapin, V.
- Schmitt, R.
- Schweizer, T.
- Shayduk, M.
- Shinozaki, K.
- Shore, S. N.
- Sidro, N.
- Sillanp\ue4\ue4, A.
- Sobczynska, D.
- Stamerra, A.
- Stark, L. S.
- Takalo, L.
- Temnikov, P.
- Tescaro, D.
- Teshima, M.
- Tonello, N.
- Torres, D. F.
- Turini, N.
- Vankov, H.
- Vitale, V.
- Wagner, R. M.
- Wibig, T.
- Witter, W.
- Zandanel, F.
- Zanin, R.
- Zapatero, J.
DOIAbstract
The MAGIC collaboration has observed very high energy gamma-ray emission from the AGN 1ES 2344+514. A gamma-ray signal corresponding to an 11 sigma excess and an integral flux of ( 2.38 +/- 0.30(stat) +/- 0.70(syst)) x 10(-11) cm(-2) s(-1) above 200 GeV has been obtained from 23.1 hr of data taking between 2005 August 3 and 2006 January 1. The data confirm the previously detected gamma-ray emission from this object during a flare seen by the Whipple collaboration in 1995 and the evidence ( below 5 sigma significance level) from long-term observations conducted by the Whipple and HEGRA groups. The MAGIC observations show a relatively steep differential photon spectrum that can be described by a power law with a photon index of alpha = -2.95 ...
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