Discovery of Gamma-ray Emission from M31 via FERMI-LAT
High Energy Astrophysical Phenomena
2015-05-19 v1
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.
Cite
@article{arxiv.1008.2537,
title = {Discovery of Gamma-ray Emission from M31 via FERMI-LAT},
author = {H. Ögelman and N. Aksaker and S. Anılan and H. Dereli and N. Emrahoğlu and I. Yegingil},
journal= {arXiv preprint arXiv:1008.2537},
year = {2015}
}
Comments
7 pages, 5 figures