Journal of Physical Studies 24(3), Article 3903 [9 pages] (2020) DOI: https://doi.org/10.30970/jps.24.3903 GeV LIGHT CURVES OF YOUNG SUPERNOVA REMNANTS O. Petruk{1,2} , V. Beshley{1} , V. Marchenko{3} , M. Patrii{4}  1Institute for Applied Problems in Mechanics and Mathematics, 3-b, Naukova St., Lviv, UA-79060, Ukraine e-mail:beshley.vasyl@gmail.com 2Astronomical Observatory, Ivan Franko National University of Lviv, 8, Kyryla and Methodia St., Lviv, UA-79005, Ukraine 3Astronomical Observatory, Jagiellonian University, Orla 171, 30-244, Cracow, Poland 4Faculty of Physics, Ivan Franko National University of Lviv, 8, Kyryla and Methodia St., Lviv, UA-79005, Ukraine Received 06 May 2020; in final form 23 May 2020; accepted 27 May 2020; published online 18 September 2020

Observational data from the Fermi Gamma-ray Space Telescope are analyzed with the goal in mind to look for variations in the \g-ray flux from young shell-like supernova remnants. A uniform methodological approach is adopted for all SNRs considered. G1.9+0.3 and Kepler SNRs have not been 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 certain results on SN1006 and SN1987A are discussed.

Key words: supernova remnants, gamma-rays, light curves

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