A lunar radio experiment with the Parkes radio telescope for the LUNASKA project

Abstract

We describe an experiment using the Parkes radio telescope in the 1.2-1.5 GHz frequency range as part of the LUNASKA project, to search for nanosecond-scale pulses from particle cascades in the Moon, which may be triggered by ultra-high-energy astroparticles. Through the combination of a highly sensitive multi-beam radio receiver, a purpose-built backend and sophisticated signal-processing techniques, we achieve sensitivity to radio pulses with a threshold electric field strength of 0.0053 $\mu$V/m/MHz, lower than previous experiments by a factor of three. We observe no pulses in excess of this threshold in observations with an effective duration of 127 hours. The techniques we employ, including compensating for the phase, dispersion and spectrum of the expected pulse, are relevant for future lunar radio experiments.

Accepted by Astroparticle Physics; 23 pages, 17 figures, 3 tables

References in corpus (6)

• The sensitivity of the next generation of lunar Cherenkov observations to UHE neutrinos and cosmic rays
• Time-Domain Measurement of Broadband Coherent Cherenkov Radiation
• A new limit on the Ultra-High-Energy Cosmic-Ray flux with the Westerbork Synthesis Radio Telescope
• The Directional Dependence of Apertures, Limits and Sensitivity of the Lunar Cherenkov Technique to a UHE Neutrino Flux
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• An Ultra-High Time Resolution Cosmic Ray Detection Mode for the Murchison Widefield Array
• The SKA Particle Array Prototype: The First Particle Detector at the Murchison Radio-astronomy Observatory
• Long-term Timing Results of Ecliptic Pulsars Observed with I-LOFAR