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Observation of VHE γ-rays from Cassiopeia A with the MAGIC telescope
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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.
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ALBERT, J., et al. Observation of VHE γ-rays from Cassiopeia A with the MAGIC telescope. Astronomy and Astrophysics. 2007. Vol. 474, num. 3, pags. 937-940. ISSN 0004-6361. [consulted: 13 of August of 2026]. Available at: https://hdl.handle.net/2445/45191