Observational data from the Fermi Gamma-ray Space Telescope are analyzed with a goal in mind to look for variations in gamma-ray flux from young shell-like supernova remnants. Uniform methodological approach is adopted for all SNRs considered. G1.9+0.3 and Kepler SNRs are not detected. The light curves of Cas~A and Tycho SNRs are compatible with the steady GeV flux during the recent ten years, as also X-ray and radio fluxes. Less confident results on SN1006 and SN1987A are discussed.
@article{arxiv.1912.06452,
title = {GeV light curves of young supernova remnants},
author = {O. Petruk and V. Beshley and V. Marchenko and M. Patrii},
journal= {arXiv preprint arXiv:1912.06452},
year = {2019}
}