Observation of VHE Gamma Radiation from HESS J1834-087/W41 with the MAGIC Telescope

Recently, the HESS array 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 J1834-087 is spatially coincident with SNR G23.3-0.3 (W41). Here we present MAGIC observations of this source, resulting in the detection of a differential γ-ray flux consistent with a power law, described as Universität Würzburg, D-97074 Würzburg, Germany Institut de F́ısica d’Altes Energies, Edifici Cn., E-08193 Bellaterra (Barcelona), Spain ETH Zurich, CH-8093 Switzerland Universidad Complutense, E-28040 Madrid, Spain Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain Universität Dortmund, D-44227 Dortmund, Germany Max-Planck-Institut für Physik, D-80805 München, Germany Università di Padova and INFN, I-35131 Padova, Italy Università di Udine, and INFN Trieste, I-33100 Udine, Italy University of Lódź, PL-90236 Lodz, Poland Yerevan Physics Institute, AM-375036 Yerevan, Armenia Tuorla Observatory, FI-21500 Piikkiö, Finland Humboldt-Universität zu Berlin, D-12489 Berlin, Germany University of California, Davis, CA-95616-8677, USA Università di Siena, and INFN Pisa, I-53100 Siena, Italy Università di Trieste, and INFN Trieste, I-34100 Trieste, Italy Institute for Nuclear Research and Nuclear Energy, BG-1784 Sofia, Bulgaria Osservatorio Astronomico and INFN Trieste, I-34100 Trieste, Italy Università di Pisa, and INFN Pisa, I-56126 Pisa, Italy Institut de Ciències de l’Espai, E-08193 Bellaterra (Barcelona), Spain Universitat de Barcelona, E-08028 Barcelona, Spain Havard-Smithsonian Center for Astrophysics, Cambridge, MA-02138 deceased correspondence: H. Bartko, hbartko@mppmu.mpg.de