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http://hdl.handle.net/2445/45191| 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 Supernoves Astronomia Astrofísica Telescopis espacials Cosmic rays Gamma rays Supernovae Astronomy Astrophysics 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: http://dx.doi.org/10.1051/0004-6361:20078168 |
| It is part of: | Astronomy and Astrophysics, 2007, vol. 474, num. 3, p. 937-940 |
| URI: | http://hdl.handle.net/2445/45191 |
| Related resource: | http://dx.doi.org/10.1051/0004-6361:20078168 |
| ISSN: | 0004-6361 |
| Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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