Discovery of Gamma-Ray Emission from M31 with The Fermi-LAT Discovery of Gamma-Ray Emission from M31 with The Fermi-LAT

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Ogelman H., Asaker N., Anilin S., Dereli H., EMRAHOĞLU N., Yegingil I., ...Daha Fazla

Conference on Astrophysics of Neutron Stars in Honor of M Ali Alpar (ASTRONS), Cesme, Türkiye, 2 - 06 Ağustos 2010, cilt.1379 identifier identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 1379
  • Doi Numarası: 10.1063/1.3629489
  • Basıldığı Şehir: Cesme
  • Basıldığı Ülke: Türkiye
  • Çukurova Üniversitesi Adresli: Evet

Özet

Two years worth of archival Fermi-LAT data was used to search for gamma-ray emission from M31 (the Andromeda Galaxy). Images of the data show no noticeable elliptical image. Subsequent on/off-source photometry using a CO image template show a 7 sigma excess in the number of on-source apertures in comparison to the off-source apertures, giving a measured flux of (4.945 +/- 0.71) x 10(-8) photons cm(-2) s(-1) for E > 100 MeV.