Radio Detection of Cosmic Ray Air Showers with Codalema
  Studies of the radio detection of Extensive Air Showers is the goal of the demonstrative experiment CODALEMA. Previous analysis have demonstrated that detection around $5.10^{16}$ eV was achieved with this set-up. New results allow for the first time to study the topology of the electric field associated to EAS events on a event by event basis. 
D. Ardouin, A. Belletoile, D. Charrier, R. Dallier, L. Denis, P.   Eschstruth, T. Gousset, F. Haddad, J. Lamblin, P. Lautrid...