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Fig. 13

image

Example of testing emission scenarios with CTA: comparison of the expected CTA spectra for two specific emission models for PKS 2155-304. A hadronic scenario is shown on the left, in which n1 = 2.1, log B [G] = 1.1. and log R [cm] = 15.6, and a standard leptonic SSC model on the right. The exposure time assumed for the simulations, 33 h, is the same as the live time for the H.E.S.S. observations, which are represented by grey data points above 3 × 1025 Hz. H.E.S.S. upper limits are not shown. Uncertainties in the CTA data points are smaller than the red squares.

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