Speaker
Marianne LEMOINE-GOUMARD
(LP2I Bordeaux)
Description
The Kepler supernova remnant was until recently the only historic supernova remnant lacking a detection at GeV and TeV energies. Using an optimized analysis based on 12 years of Fermi-LAT observations, we report a solid >6σ detection with a spectral index of 2.1 for an energy flux above 100 MeV of $3.1 \times 10^{-12}$ erg.cm$^{−2}$.s$^{−1}$. The gamma-ray excess is fully compatible with the radio, infrared or X-ray spatial distribution of the SNR.
In this presentation, we will review the morphological and spectral characteristics of the GeV source. A broad-band modeling describing the multi-wavelength observations will also be presented along with its main constraints on the accelerated particles.
Primary authors
Marianne LEMOINE-GOUMARD
(LP2I Bordeaux)
Dr
Fabio Acero
(AIM, CEA, CNRS, Université Paris-Saclay)
Dr
Jean Ballet
(CEA)
