After almost three years of data taking in sky survey mode, the \emph{Fermi}-LAT has detected γ-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 γ-ray integral flux from 400 MeV up to 100 GeV has been measured to be (3.5±1.1stat±0.7syst)×10−9 cm−2s−1 with a photon index of 2.3±0.2stat±0.1syst.
@article{arxiv.1108.0265,
title = {Fermi-LAT Detection of the Young SuperNova Remnant Tycho},
author = {F. Giordano and M. Naumann-Godo and J. Ballet and K. Bechtol and S. Funk and J. Lande and M. N. Mazziotta and S. Rainò and T. Tanaka and O. Tibolla and Y. Uchiyama},
journal= {arXiv preprint arXiv:1108.0265},
year = {2015}
}