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Title: Observation of VHE γ-rays from Cassiopeia A with the MAGIC telescope
Author: Albert, J.
Aliu, E.
Armada, A.
Baixeras Divar, Carmen
Bordas Coma, Pol
Bosch i Ramon, Valentí
Cortina Blanco, Juan
Domingo Santamaría, Eva
Errando, M.
Fernández Sánchez, Enrique
Firpo, R.
Flix, J.
Font, L.
López, J.
Martínez, Mario
Moralejo, Abelardo
Oña-Wilhelmi, Emma de
Paredes i Poy, Josep Maria
Puchades, N.
Ribó Gomis, Marc
Keywords: Raigs còsmics
Raigs gamma
Telescopis espacials
Cosmic rays
Gamma rays
Space telescopes
Issue Date: 2007
Publisher: Springer Verlag
Abstract: Aims:We searched for very high energy (VHE) γ-ray emission from the supernova remnant Cassiopeia A Methods: The shell-type supernova remnant Cassiopeia A was observed with the 17 m MAGIC telescope between July 2006 and January 2007 for a total time of 47 h. Results: The source was detected above an energy of 250 GeV with a significance of 5.2σ and a photon flux above 1 TeV of (7.3 ± 0.7_stat ± 2.2_sys) × 10-13 cm-2s-1. The photon spectrum is compatible with a power law dN/dE ∝ E-Γ with a photon index Γ = 2.3 ± 0.2_stat ± 0.2_sys. The source is point-like within the angular resolution of the telescope.
Note: Versió postprint del document publicat a:
It is part of: Astronomy and Astrophysics, 2007, vol. 474, num. 3, p. 937-940
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ISSN: 0004-6361
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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