The Air-Fluorescence Yield

Details The Air-Fluorescence Yield The Air-Fluorescence Yield

2008-07-30

arxiv.org/abs/0807.4824v1

Astronomy and Astrophysics

Astrophysics

6 pages, 3 figures. 43rd Rencontres de Moriond - Electroweak Interactions and Unified Theories, La Thuile, Italie, 1-8 March 2

Scientific paper

Detection of the air-fluorescence radiation induced by the charged particles of extensive air showers is a well-established technique for the study of ultra-high energy cosmic rays. Fluorescence telescopes provide a nearly calorimetric measure of the primary energy. Presently the main source of systematic uncertainties comes from our limited accuracy in the fluorescence yield, that is, the number of fluorescence photons emitted per unit of energy deposited in the atmosphere by the shower particles. In this paper the current status of our knowledge on the fluorescence yield both experimental an theoretical will be discussed.

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