Título:
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Discovery of a very high energy gamma-ray signal from the 3C 66A/B region
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Autor/a:
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MAGIC Collaboration; Paredes i Poy, Josep Maria; Ribó Gomis, Marc; Bosch i Ramon, Valentí
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Otros autores:
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Universitat de Barcelona |
Abstract:
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The MAGIC telescope observed the region around the distant blazar 3C 66A for 54.2 hr in 2007 August-December. The observations resulted in the discovery of a γ-ray source centered at celestial coordinates R.A. = 2h23m12s and decl. = 43°0farcm7 (MAGIC J0223+430), coinciding with the nearby radio galaxy 3C 66B. A possible association of the excess with the blazar 3C 66A is discussed. The energy spectrum of MAGIC J0223+430 follows a power law with a normalization of (1.7 ± 0.3stat ± 0.6syst) × 10-11 TeV-1 cm-2 s-1 at 300 GeV and a photon index Γ = -3.10 ± 0.31stat ± 0.2syst. |
Materia(s):
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-Raigs gamma -Observacions astronòmiques -Galàxies -Gamma rays -Astronomical observations -Galaxies |
Derechos:
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(c) American Astronomical Society, 2009
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Tipo de documento:
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Artículo Artículo - Versión publicada |
Editor:
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Institute of Physics (IOP)
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