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          Institute: MPI für Physik     Collection: MPI für Physik     Display Documents



ID: 543687.0, MPI für Physik / MPI für Physik
Discovery of a very high energy gamma-ray signal from the 3C 66A/B region
Authors:MAGIC Collaboration; Aliu, E.
Date of Publication (YYYY-MM-DD):2009
Title of Journal:Astrophysical Journal Letters
Journal Abbrev.:Astrophys.J.L.
Issue / Number:692
Start Page:29
End Page:33
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:The MAGIC telescope observed the region around the distant blazar 3C 66A for 54.2 h in 2007 August-December. The observations resulted in the discovery of a gamma-ray source at energies above 150 GeV centered at celestial coordinates RA=2h23m12s and DEC=43deg0.7' (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+-0.3_(stat)+-0.6_(syst)) 10^(-11) TeV^(-1)cm^(-2)s^(-1) at 300 GeV and a photon index Gamma=-3.10+-0.31_(stat)+-0.2_(syst). No significant variability of the signal was found during the observation period.
Classification / Thesaurus:MAGIC
Comment of the Author/Creator:submitted 2008 October 26
External Publication Status:published
Document Type:Article
Communicated by:N.N.
Affiliations:MPI für Physik
Identifiers:LOCALID:MPP-2008-154
URL:http://www.slac.stanford.edu/spires/find/hep/www?r...
URL:http://arXiv.org/abs/arxiv:0810.4712
URL:http://publications.mppmu.mpg.de/?action=search&mp...
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