MAGIC Observations of Very High Energy γ-Rays from HESS J1813-178
Bastieri, D.; Ciprini, S.; Longo, F.; Paneque, D.; Torres, D. F.; Vitale, V.; Hayashida, M.; Wagner, R.; Tonello, N.; Stamerra, A.; Meyer, M.; Anderhub, H.; Biland, A.; Pauss, F.; Garczarczyk, M.; Galante, N.; Gaug, M.; Mizobuchi, S.; Teshima, M.; Aliu, E.; Antoranz, P.; Barrio, J. A.; Bednarek, W.; Blanch, O.; Bretz, T.; Contreras, J. L.; Cortina, J.; Dazzi, F.; De Angelis, A.; De Lotto, B.; Dorner, D.; Doro, M.; Fonseca, M. V.; Font, L.; Hose, J.; Lindfors, E.; López, M.; Majumdar, P.; Maneva, G.; Mannheim, K.; Mariotti, M.; Martínez, M.; Mazin, D.; Mirzoyan, R.; Moralejo, A.; Nilsson, K.; Paoletti, R.; Prandini, E.; Rhode, W.; Rico, J.; Schweizer, T.; Sillanpää, A.; Sobczynska, D.; Takalo, L.; Temnikov, P.; Tescaro, D.; Rügamer, S.; Lucarelli, F.; Oya, I.; de los Reyes, R.; Bartko, H.; Bigongiari, C.; Miranda, J. M.; Errando, M.; Berger, K.; Bock, R. K.; Ferenc, D.; Lorenz, E.; Meucci, M.; Saggion, A.; Scalzotto, V.; Asensio, M.; Baixeras, C.; Camara, M.; Commichau, S.; Fernández, E.; Firpo, R.; Goebel, F.; Kranich, D.; Laille, A.; Pasanen, M.; Pascoli, D.; Peruzzo, L.; Rissi, M.; Robert, A.; Shayduk, M.; Sidro, N.; Turini, N.; Vankov, H.; Zapatero, J.; Bartel, M.; Albert, J.; Armada, A.; Bavikadi, R.; Bisesi, E.; Britvitch, I.; Chilingarian, A.; Coarasa, J. A.; Curtev, V.; Danielyan, V.; Domingo-Santamaria, E.; Fagiolini, M.; Flix, J.; Gebauer, J.; Giller, M.; Hakobyan, D.; Hengstebeck, T.; Höhne, D.; Jacon, P.; Kalekin, O.; Lenisa, T.; Liebing, P.; López, J.; Mase, K.; Merck, C.; Merck, M.; Oña-Wilhelmi, E.; Orduña, R.; Otte, N.; Pavel, N.; Pegna, R.; Piccioli, A.; Riegel, B.; Rossato, G.; Sanchez, A.; Sartori, P.; Schmitt, R.; Shinozaki, K.; Shore, S.; Stark, L.; Torres, A.; Wibig, T.; Wittek, W.
Germany, Spain, Switzerland, Italy, Poland, Armenia, Finland, United States, Bulgaria
Abstract
Recently, the HESS collaboration has reported the detection of γ-ray emission above a few hundred GeV from eight new sources located close to the Galactic plane. The source HESS J1813-178 has sparked particular interest, as subsequent radio observations imply an association with supernova remnant G12.82-0.02. Triggered by the detection in very high energy γ-rays, a positionally coincident source has also been found in INTEGRAL and ASCA data. In this Letter we present MAGIC observations of HESS J1813-178, resulting in the detection of a differential γ-ray flux consistent with a hard-slope power law, described as dNγ/(dAdtdE)=(3.3+/-0.5)×10-12(E/TeV)-2.1+/-0.2 cm-2s-1TeV-1. We briefly discuss the observational technique used and the procedure implemented for the data analysis, and we put this detection in the perspective of multifrequency observations.