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Radioelectric Field Features of Extensive Air Showers Observed with CODALEMA

D. Ardouin·A. Belletoile·D. Charrier·R. Dallier·L. Denis·P. Eschstruth·T. Gousset·F. Haddad·J. Lamblin·P. Lautridou·A. Lecacheux·D. Monnier-Ragaigne·O. Ravel·T. Saugrin·S. Valcares
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Abstract

Based on a new approach to the detection of radio transients associated with extensive air showers induced by ultra high energy cosmic rays, the experimental apparatus CODALEMA is in operation, measuring about 1 event per day corresponding to an energy threshold ~ 5. 10^16 eV. Its performance makes possible for the first time the study of radio-signal features on an event-by-event basis. The sampling of the magnitude of the electric field along a 600 meters axis is analyzed. It shows that the electric field lateral spread is around 250 m (FWHM). The possibility to determine with radio both arrival directions and shower core positions is discussed.

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D. Ardouin, A. Belletoile, D. Charrier, R. Dallier, L. Denis, P. Eschstruth, T. Gousset, F. Haddad, J. Lamblin, P. Lautridou, A. Lecacheux, D. Monnier-Ragaigne, O. Ravel, T. Saugrin, S. Valcares. 2006-08-25. Radioelectric Field Features of Extensive Air Showers Observed with CODALEMA. https://doi.org/10.1016/j.astropartphys.2006.07.002

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