Acoustic Detection of Cosmic-Ray Air Showers

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Science  17 Nov 1978:
Vol. 202, Issue 4369, pp. 749-751
DOI: 10.1126/science.202.4369.749


The signal strength, bandwidth, and detection range of acoustic pulses generated by cosmic-ray air showers striking a water surface are calculated. These signals are strong enough to be audible to a submerged swimmer. The phenomena may be useful for studying very-high-energy cosmic rays and may help answer the important question of whether the origin of cosmic rays is extragalactic or galactic.