Fig. 3.
Cross section of three dimensional parameter space calculated for the bump position μ = 1.5 μm. Grey areas correspond to the cross sections of 95% confidence level constraints on the parameters of the log-Gaussian EBL bump, obtained with different blazars. The strongest constraint is imposed by 1ES 1218+304 data. For this source, the cross section of 68% confidence contour around the best-fit value is also shown. Blue cross in the excluded region and the star within the 68% confidence contour show the two bump measurements reported by CIBER (Matsuura 2017).
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