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We perform simulations of Cherenkov Telescope Array (CTA) observations of ayoung supernova remnant RX J1713.7-3946. This target is not only one of thebrightest sources ever discovered in very high-energy gamma rays but also wellobserved in other wavebands. In X-rays, the emission is dominated bysynchrotron radiation, which links directly to the existence of high-energyelectrons. Radio observations of CO and HI gas have revealed a highlyinhomogeneous medium surrounding the SNR, such as clumpy molecular clouds.Therefore gamma rays from hadronic interactions are naturally expected.However, the spectrum in GeV energy range measured by Fermi/LAT indicates moretypical of leptonic emission from accelerated electrons. Despite lots ofmulti-wavelength information, the competing interpretations have led to muchuncertainty in the quest of unraveling the true origin of the gamma-rayemission from RX~J1713.7--3946. CTA will achieve highest performance ever insensitivity, angular resolution, and energy resolution. We estimate CTAcapability to examine the emission mechanisms of the gamma rays throughsimulated spatial distribution, spectra, and their time variation.

Simulating Cherenkov Telescope Array observation of RX J1713.7-3946