Details

Autor(en) / Beteiligte

• Aleksić, J.
• Antonelli, L. A.
• Asensio, M.
• Backes, M.
• Barres de Almeida, U.
• Becerra González, J.
• Berger, K.
• Blanch, O.
• Bock, R. K.
• Boller, A.
• Bonnefoy, S.
• Bretz, T.
• Carmona, E.
• Carosi, A.
• Colin, P.
• Contreras, J. L.
• Da Vela, P.
• Dazzi, F.
• De Angelis, A.
• De Caneva, G.
• De Lotto, B.
• Delgado Mendez, C.
• Doert, M.
• Domínguez, A.
• Dominis Prester, D.
• Dorner, D.
• Eisenacher, D.
• Elsaesser, D.
• Farina, E.
• García López, R. J.
• Garrido Terrats, D.
• Giavitto, G.
• Godinović, N.
• González Muñoz, A.
• Gozzini, S. R.
• Hadamek, A.
• Hadasch, D.
• Häfner, D.
• Herrero, A.
• Hose, J.
• Idec, W.
• Jankowski, F.
• Kadenius, V.
• Klepser, S.
• Knoetig, M. L.
• Krähenbühl, T.
• Krause, J.
• Lelas, D.
• Lindfors, E.
• Lombardi, S.
• López-Coto, R.
• Lorenz, E.
• Makariev, M.
• Mallot, K.
• Mankuzhiyil, N.
• Mannheim, K.
• Maraschi, L.
• Martínez, M.
• Masbou, J.
• Mazin, D.
• Meucci, M.
• Moldón, J.
• Niedzwiecki, A.
• Nowak, N.
• Orito, R.
• Palatiello, M.
• Paneque, D.
• Paredes, J. M.
• Prada Moroni, P. G.
• Prandini, E.
• Reinthal, R.
• Rhode, W.
• Ribó, M.
• Saggion, A.
• Saito, K.
• Saito, T. Y.
• Salvati, M.
• Schultz, C.
• Schweizer, T.
• Sitarek, J.
• Snidaric, I.
• Spanier, F.
• Spiro, S.
• Stamatescu, V.
• Stamerra, A.
• Storz, J.
• Takalo, L.
• Takami, H.
• Terzić, T.
• Tescaro, D.
• Teshima, M.
• Tibolla, O.
• Torres, D. F.
• Toyama, T.
• Treves, A.
• Uellenbeck, M.
• Vogler, P.
• Weitzel, Q.
• Zandanel, F.
• Buson, S.

Titel

Discovery of very high energy gamma-ray emission from the blazar 1ES 1727+502 with the MAGIC Telescopes

Ist Teil von

• Astronomy and astrophysics (Berlin), 2014-03, Vol.563, p.np-np

Ort / Verlag

United States: EDP Sciences

Erscheinungsjahr

2014

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• Motivated by the prediction of a high TeV luminosity we investigated whether the blazar 1ES 1727+502 (z = 0.055) is emitting very high energy (VHE, E > 100 GeV) γ rays. We observed the BL Lac object 1ES 1727+502 in stereoscopic mode with the two MAGIC telescopes for 14 nights between May 6th and June 10th 2011, for a total effective observing time of 12.6 h. To study the multiwavelength spectral energy distribution (SED), we used simultaneous optical R-band data from the KVA telescope, archival UV/optical and X-ray observations from instruments UVOT and XRT on board of the Swift satellite, and high energy (HE, 0.1 GeV–100 GeV) γ-ray data from the Fermi-LAT instrument. We detected, for the first time, VHE γ-ray emission from 1ES 1727+502 at a statistical significance of 5.5σ. The integral flux above 150 GeV is estimated to be (2.1 ± 0.4)% of the Crab nebula flux and the de-absorbed VHE spectrum has a photon index of (2.7 ± 0.5). No significant short-term variability was found in any of the wavebands presented here. We model the SED using a one-zone synchrotron self-Compton model obtaining parameters typical for this class of sources.