Search for microwave emission from ultrahigh energy cosmic rays

J. Alvarez-Muñiz, A. Berlin, M. Bogdan, M. Boháčová, C. Bonifazi, W. R. Carvalho Jr, J. R. T. de Mello Neto, P. Facal San Luis, J. F. Genat, N. Hollon, E. Mills, M. Monasor, P. Privitera, L. C. Reyes, B. Rouille d'Orfeuil, E. M. Santos, S. Wayne, C. Williams, E. Zas, J. Zhou

Published 2012-05-25, updated 2012-10-01Version 2

We present a search for microwave emission from air showers induced by ultrahigh energy cosmic rays with the microwave detection of air showers experiment. No events were found, ruling out a wide range of power flux and coherence of the putative emission, including those suggested by recent laboratory measurements.