1203.1781 (L. Cazon et al.)

The non-linearity between and induced by the acceptance of fluorescence telescopes    [PDF]

L. Cazon, R. Ulrich

The measurement of the average depth of the shower maximum is the most commonly used observable for the possible inference of the primary cosmic-ray mass composition. Currently, different experimental Collaborations process and present their data not in the same way, leading to problems in the comparability and interpretation of the results. Whereas is expected to be proportional to in ideal conditions, we demonstrate that the finite field-of-view of fluorescence telescopes plus the attenuation in the atmosphere can introduce a non-linearity into this relation, which is specific for each particular detector setup.

View original: http://arxiv.org/abs/1203.1781