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arXiv · 1008.2537

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

H. Ögelman·N. Aksaker·S. Anılan·H. Dereli·N. Emrahoğlu·I. Yegingil
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Abstract

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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H. Ögelman, N. Aksaker, S. Anılan, H. Dereli, N. Emrahoğlu, I. Yegingil. 2010-08-15. Discovery of Gamma-ray Emission from M31 via FERMI-LAT. https://doi.org/10.1063/1.3629489

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