Paper: astro-ph/0508580
Date: Fri, 26 Aug 2005 14:47:50 GMT (55kb)

Title: Optimal Radio Window for the Detection of Ultra-High-Energy Cosmic Rays
and Neutrinos off the Moon

Authors: O. Scholten, J. Bacelar, R. Braun, A.G. de Bruyn, H. Falcke, B.
Stappers, and R.G. Strom

Comments: Submitted to Astroparticle Physics
\\
When high-energy cosmic rays impinge on a dense dielectric medium, radio
waves are produced through the Askaryan effect. We show that at wavelengths
comparable to the length of the shower produced by an Ultra-High Energy cosmic
ray or neutrino, radio signals are an extremely efficient way to detect these
particles. Through an example it is shown that this new approach offers, for
the first time, the realistic possibility to measure UHE neutrino fluxes below
the Waxman-Bahcall limit using an existing facility. It is shown that in only
one month of observation with the recently-approved LOFAR radio telescope,
cosmic-ray events can be measured beyond the GZK-limit, at a flux level of
three orders of magnitude below that of the highest-energy events ever
measured.

\\ ( http://arXiv.org/abs/astro-ph/0508580 , 55kb)