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arxiv: 1008.2537 · v1 · pith:6JBGZRHKnew · submitted 2010-08-15 · 🌌 astro-ph.HE

Discovery of Gamma-ray Emission from M31 via FERMI-LAT

H. \"Ogelman , N. Aksaker , S. An{\i}lan , H. Dereli , N. Emraho\u{g}lu , I. Yegingil This is my paper
classification 🌌 astro-ph.HE
keywords aperturesdataemissionfermi-latgamma-rayimageanalysisandromeda
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2 years worth of archival FERMI-LAT data was used to search for the gamma-ray emission from the Andromeda galaxy. The data show no noticeable elliptical image. Subsequent on-off source aperture photometry analysis using a CO image template show a 7 sigma excess in the number of on-source apertures in comparison to the off-source apertures, yielding a flux of (4.95+/-0.71)x10-8 photons cm-2 s-1 for E>100 MeV.

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