Radioelectric Field Features of Extensive Air Showers Observed with CODALEMA

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

Radioelectric Field Features of Extensive Air Showers Observed with CODALEMA

Authors

Description

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.
Accepted for publication in Astroparticle Physics