Detection of very-high energy gamma-ray emission from NGC 1275 by the MAGIC telescopes
- Aleksic, J.
- Alvarez, E. A.
- Antonelli, L. A.
- Antoranz, P.
- Asensio, M.
- Backes, M.
- U. B., De
- Barrio, J. A.
- Bastieri, D.
- Gonzalez, J. B.
- Bednarek, W.
- Berger, K.
- Bernardini, E.
- Biland, A.
- Blanch, O.
- Bock, R. K.
- Boller, A.
- Bonnoli, Giacomo
- Tridon, D. B.
- Bretz, T.
- Canellas, A.
- Carmona, E.
- Carosi, A.
- Colin, P.
- Colombo, E.
- Contreras, J. L.
- Cortina, J.
- Cossio, L.
- Covino, S.
- Vela, P. D.
- Dazzi, F.
- Angelis, A. D.
- Caneva, G. D.
- Del, E. D.
- Lotto, B. D.
- Mendez, C. D.
- Ortega, A. D.
- Doert, M.
- Dominguez, A.
- Prester, D. D.
- Dorner, D.
- Doro, M.
- Eisenacher, D.
- Elsaesser, D.
- Ferenc, D.
- Fonseca, M. V.
- Font, L.
- Fruck, C.
- R. J. G.,
- Garczarczyk, M.
- Garrido, D.
- Giavitto, G.
- Godinovic, N.
- Gozzini, S. R.
- Hadasch, D.
- Hafner, D.
- Herrero, A.
- Hildebrand, D.
- Hohne Monch, D.
- Hose, J.
- Hrupec, D.
- Huber, B.
- Jogler, T.
- Kadenius, V.
- Kellermann, H.
- Klepser, S.
- Krahenbuhl, T.
- Krause, J.
- Barbera, A. L.
- Lelas, D.
- Leonardo, E.
- Lewandowska, N.
- Lindfors, E.
- Lombardi, S.
- Lopez, M.
- Lopez Coto, R.
- Lopez Oramas, A.
- Lorenz, E.
- Makariev, M.
- Maneva, G.
- Mankuzhiyil, N.
- Mannheim, K.
- Maraschi, L.
- Mariotti, M.
- Martinez, M.
- Mazin, D.
- Meucci, M.
- Miranda, J. M.
- Mirzoyan, R.
- Moldon, J.
- Moralejo, A.
- Munar Adrover, P.
- Niedzwiecki, A.
- Nieto, D.
- Nilsson, K.
- Nowak, N.
- Orito, R.
- Paiano, S.
- Paneque, D.
- Paoletti, Riccardo
- Pardo, S.
- Paredes, J. M.
- Partini, S.
- Perez Torres, M. A.
- Persic, M.
- Peruzzo, L.
- Pilia, M.
- Pochon, J.
- Prada, F.
- P. G. P.,
- Prandini, E.
- Gimenez, I. P.
- Puljak, I.
- Reichardt, I.
- Reinthal, R.
- Rhode, W.
- Ribo, M.
- Rico, J.
- Rugamer, S.
- Saggion, A.
- Saito, K.
- Saito, T. Y.
- Salvati, M.
- Satalecka, K.
- Scalzotto, V.
- Scapin, V.
- Schultz, C.
- Schweizer, T.
- Shayduk, M.
- Shore, S. N.
- Sillanpaa, A.
- Sitarek, J.
- Snidaric, I.
- Sobczynska, D.
- Spanier, F.
- Spiro, S.
- Stamatescu, V.
- Stamerra, Antonio
- Steinke, B.
- Storz, J.
- Strah, N.
- Sun, S.
- Suric, T.
- Takalo, L.
- Takami, H.
- Tavecchio, F.
- Temnikov, P.
- Terzic, T.
- Tescaro, D.
- Teshima, M.
- Tibolla, O.
- Torres, D. F.
- Treves, A.
- Uellenbeck, M.
- Vogler, P.
- Wagner, R. M.
- Weitzel, Q.
- Zabalza, V.
- Zandanel, F.
- Zanin, R.
- Pfrommer, C.
- Pinzke, A.
DOIAbstract
We report on the detection of very-high energy (VHE, E > 100 GeV) gamma-ray emission from NGC 1275, the central radio galaxy of the Perseus cluster of galaxies. The source has been detected by the MAGIC telescopes with a statistical significance of 6.6s above 100 GeV in 46 h of stereo observations carried out between August 2010 and February 2011. The measured differential energy spectrum between 70 GeV and 500 GeV can be described by a power law with a steep spectral index of Gamma = -4.1 +/- 0.7(stat) +/- 0.3(syst), and the average flux above 100 GeV is F-gamma = (1.3 +/- 0.2(stat) +/- 0.3(syst)) x 10(-11) cm(-2) s(-1). These results, combined with the power-law spectrum measured in the first two years of observations by the Fermi-LAT abo...
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