Geomagnetic effects on atmospheric Cerenkov images
Astrophysics
2008-11-26 v1
Abstract
Atmospheric Cerenkov telescopes are used to detect electromagnetic showers from primary gamma rays of energy ~300 GeV - ~10 TeV and to discriminate these from cascades due to hadrons using the Cerenkov images. The geomagnetic field affects the development of showers and is shown to diffuse and distort the images. When the component of the field normal to the shower axis is sufficiently large (> 0.4 G) the performance of gamma ray telescopes may be affected, although corrections should be possible.
Keywords
Cite
@article{arxiv.astro-ph/9904082,
title = {Geomagnetic effects on atmospheric Cerenkov images},
author = {P. M. Chadwick and K. Lyons and T. J. L. McComb and K. J. Orford and J. L. Osborne and S. M. Rayner and I. D. Roberts and S. E. Shaw and K. E. Turver},
journal= {arXiv preprint arXiv:astro-ph/9904082},
year = {2008}
}
Comments
14 pages, 10 figure, accepted for publication in J. Phys. G: Nucl. Part. Phys