- Conference date: 9–13 July 2012
- Location: Heidelberg, Germany
Puppis A (G260.4-3.4) is a middle-aged supernova remnant displaying increasing X-ray surface brightness from West to East corresponding to an increasing density of the ambient interstellar medium at the Eastern and Northern shell. The dense IR photon field and the high ambient density around the remnant make it an ideal case to study in γ-rays. Three years of Fermi-LAT data have been analyzed showing a spatially extended γ-ray emission with a morphology matching that observed in the radio and X-ray domains. The γ-ray spectrum is well described by a simple power law with an index of 2.1. To constrain the relativistic electron population we have used seven years of WMAP data to extend the radio spectrum up to 93 GHz. The results obtained in the radio and γ-ray domains will be described in detail, as well as the possible origins of the very high energy γ-ray emission (Bremsstrahlung, Inverse Compton scattering by electrons or decay of neutral pions produced by proton interactions).
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