Fermi-LAT Detection of the Young SuperNova Remnant Tycho
  After almost three years of data taking in sky survey mode, the \emph{Fermi}-LAT has detected $\gamma$-ray emission toward the Tycho's Supernova Remnant (SNR). The Tycho SNR is among the youngest remnants in the Galaxy, originating from a Type Ia Supernova in AD 1572. The $\gamma$-ray integral flux from 400 MeV up to 100 GeV has been measured to be (3.5$\pm1.1_{stat}\pm0.7_{syst}$)$\times10^{-9}$ cm$^{-2}$s$^{-1}$ with a photon index of 2.3$\pm0.2_{stat}\pm0.1_{syst}$. 
F. Giordano, M. Naumann-Godo, J. Ballet, K. Bechtol, S. Funk, J.   Lande, M. N. Mazziotta, S. Rain\`o, T. Tanaka, O. Tibolla...
astro-ph.HE