Universality of electron-positron distributions in extensive air showers

Details Universality of electron-positron distributions in extensive air showers Universality of electron-positron distributions in extensive air showers

2009-02-03

arxiv.org/abs/0902.0548v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

13 pages, 22 figures, 1 table

Scientific paper

10.1016/j.astropartphys.2009.02.

Using a large set of simulated extensive air showers, we investigate universality features of electron and positron distributions in very-high-energy cosmic-ray air showers. Most particle distributions depend only on the depth of the shower maximum and the number of particles in the cascade at this depth. We provide multi-dimensional parameterizations for the electron-positron distributions in terms of particle energy, vertical and horizontal momentum angle, lateral distance, and time distribution of the shower front. These parameterizations can be used to obtain realistic electron-positron distributions in extensive air showers for data analysis and simulations of Cherenkov radiation, fluorescence signal, and radio emission.

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