Overview of lunar detection of ultra-high energy particles and new plans for the SKA

Abstract

The lunar technique is a method for maximising the collection area for ultra-high-energy (UHE) cosmic ray and neutrino searches. The method uses either ground-based radio telescopes or lunar orbiters to search for Askaryan emission from particles cascading near the lunar surface. While experiments using the technique have made important advances in the detection of nanosecond-scale pulses, only at the very highest energies has the lunar technique achieved competitive limits. This is expected to change with the advent of the Square Kilometre Array (SKA), the low-frequency component of which (SKA-low) is predicted to be able to detect an unprecedented number of UHE cosmic rays. In this contribution, the status of lunar particle detection is reviewed, with particular attention paid to outstanding theoretical questions, and the technical challenges of using a giant radio array to search for nanosecond pulses. The activities of SKA's High Energy Cosmic Particles Focus Group are described, as is a roadmap by which this group plans to incorporate this detection mode into SKA-low observations. Estimates for the sensitivity of SKA-low phases 1 and 2 to UHE particles are given, along with the achievable science goals with each stage. Prospects for near-future observations with other instruments are also described.

arXiv comment6 pages, 3 figures, presented at the 7th International Conference on Acoustic and Radio EeV Neutrino Detection Activities (ARENA 2016), Groningen, The Netherlands

References in corpus (20)

• Correlation of the highest energy cosmic rays with nearby extragalactic objects
• Measurement of the energy spectrum of cosmic rays above 10^18 eV using the Pierre Auger Observatory
• Experimental Limit on the Cosmic Diffuse Ultra-high Energy Neutrino Flux
• Searches for Anisotropies in the Arrival Directions of the Highest Energy Cosmic Rays Detected by the Pierre Auger Observatory
• Super Heavy Dark Matter in light of BICEP2, Planck and Ultra High Energy Cosmic Rays Observations
• LUNASKA experiments using the Australia Telescope Compact Array to search for ultra-high energy neutrinos and develop technology for the lunar Cherenkov technique
• UHE neutrino searches using a Lunar target: First Results from the RESUN search
• Constraints on the flux of Ultra-High Energy neutrinos from WSRT observations
• On the status of superheavy dark matter
• The sensitivity of the next generation of lunar Cherenkov observations to UHE neutrinos and cosmic rays
• LUNASKA Experiment Observational Limits on UHE Neutrinos from Centaurus A and the Galactic Center
• A new limit on the Ultra-High-Energy Cosmic-Ray flux with the Westerbork Synthesis Radio Telescope
• The sensitivity of past and near-future lunar radio experiments to ultra-high-energy cosmic rays and neutrinos
• A lunar radio experiment with the Parkes radio telescope for the LUNASKA project
• Optimized Trigger for Ultra-High-Energy Cosmic-Ray and Neutrino Observations with the Low Frequency Radio Array
• A limit on the ultra-high-energy neutrino flux from lunar observations with the Parkes radio telescope
• Noise statistics in a fast digital radio receiver: the Bedlam backend for the Parkes Radio Telescope
• The rise and fall of top-down models as main UHECR sources
• Prospects for detecting ultra-high-energy particles with FAST
• Sensitivity of lunar particle-detection experiments

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