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Thread: Cherenkov Light from Horizontal Air Shower

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    Cherenkov Light from Horizontal Air Shower

    Holy Krolik! The authors, several Polish scientists, and a companoin from the Colorado Mines, suggest that a detector, at altitude, can pick up super energetic cosmic ray induced air showers, propagating horizontally through Earth's atmosphere, via secondary muons producing photons through ~ 400 km of air. The atmospheric path is deep when you look sideways (which is why you don't tan well at sunset....), and the effect is geatly exacerbated by using a baloon borne detector. They expect in 100 days of observations, ~ 120 events @ 1017 ev, and one at 1018. pretty neat trick.
    https://arxiv.org/abs/1909.12007

    pete
    Last edited by trinitree88; 2019-Sep-30 at 03:23 PM. Reason: url

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