Observation of VHE γ-rays from Cassiopeia A with the MAGIC telescope

Autoria(s): Albert, J.; Aliu, E.; Armada, A.; Baixeras Divar, Carmen; Bordas, P.; 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, E.; Paredes i Poy, Josep Maria; Puchades, N.; Ribó Gomis, Marc
Contribuinte(s)

Universitat de Barcelona
Resumo

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.
Identificador

http://hdl.handle.net/2445/45191
Idioma(s)

eng
Publicador

Springer Verlag
Direitos

(c) Springer Verlag, 2007

info:eu-repo/semantics/openAccess
Palavras-Chave #Raigs còsmics #Raigs gamma #Supernoves #Astronomia #Astrofísica #Telescopis espacials #Cosmic rays #Gamma rays #Supernovae #Astronomy #Astrophysics #Space telescopes
Tipo

info:eu-repo/semantics/article

info:eu-repo/semantics/acceptedVersion
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