Search for Spatially Extended Fermi 1 -LAT Sources Using Two 2 Years of Data

J. Lande (1) , Markus Ackermann , A. Allafort , Jean Ballet (2) , K. Bechtol , T. H. Burnett , J. Cohen-Tanugi (3) , A. Drlica-Wagner , S. Funk , F. Giordano , M.-H. Grondin , M. Kerr , M. Lemoine-Goumard (4)

1 IRAP - Institut de recherche en astrophysique et planétologie
2 AIM (UMR7158 / UMR_E_9005 / UM_112) - Astrophysique Interprétation Modélisation
3 LUPM - Laboratoire Univers et Particules de Montpellier
4 GLAST

Spatial extension is an important characteristic for correctly associating γ-rayemitting sources with their counterparts at other wavelengths and for obtaining an unbiased model of their spectra. We present a new method for quantifying the spatial extension of sources detected by the Large Area Telescope (LAT), the primary science instrument on the Fermi Gamma-ray Space Telescope (Fermi ). We perform a series of Monte Carlo simulations to validate this tool and calculate

Mots clés: catalogs; gamma rays: general; ISM: supernova remnants; methods: statistical Online-only material: color figures

Domaines: Phénomènes cosmiques de haute energie [astro-ph.HE]; Phénomènes cosmiques de haute energie [astro-ph.HE]

J. Lande, Markus Ackermann, A. Allafort, Jean Ballet, K. Bechtol, et al.. Search for Spatially Extended Fermi 1 -LAT Sources Using Two 2 Years of Data. The Astrophysical Journal, 2012, 756, pp.5. ⟨10.1088/0004-637X/756/1/5⟩. ⟨in2p3-00747331⟩