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Published online 18 March 2008 | Nature 452, 264- (2008) | doi:10.1038/452264b
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Fly's eye detector spies cosmic-ray cut-off
'HiRes' experiments get a positive negative result.
An experiment to detect subatomic particles arriving from deep space has triumphantly announced … their absence.
The finding, a swansong from the now defunct High Resolution Fly’s Eye (HiRes) cosmic-ray observatory in Utah, is far from a disappointment.
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A tiny depletion for cosmic ray proton plus CMB photon to photoelectron+positron is overshadowed by the intense GZK cutoff for photopion production. Two questions arise: 1) What is the the cosmic ray energy scattering threshold and cross-section for "dark matter?" Official truth is that there is a *lot* of it, as opposed to CMB photon concentration. 2) Helicity in an ultra-relativistic fermion is full chirality. The Weak interaction is strictly left-handed. Are the detected depleted protons of a single remaining chirality (polarized)?
Could this type of cosmic blast ( close to Earth) shed any light on destructive blasts witnessed over parts of Russia and Alaska in earlier times or was that something different?
Regarding the production of characteristic flashes of solar ultraviolet light, my experimental results with XRF sources and radioisotopes have shown first and definite evidence for ionizing radiations (beta, gamma, or X-ray) causing UV dominant optical radiation emission from the same parent excited atom by a previously unknown atomic phenomenon. Solar X-rays and gamma rays are responsible for solar UV by the new phenomenon. http://www.angelfire.com/sc3/1010/6discoveries.html M.A.Padmanabha Rao, Former Professor in Medical Physics, raomap@yahoo.com