Observation of shadowing of ultrahigh-energy cosmic rays by the Moon and the Sun
Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields1991Vol. 43(5), pp. 1735–1738
Citations Over TimeTop 10% of 1991 papers
D. E. Alexandreas, R. C. Allen, D. Berley, S. D. Biller, R. L. Burman, D. R. Cady, C. Y. Chang, B. L. Dingus, G. M. Dion, R. W. Ellsworth, M. K. Gilra, J. A. Goodman, S. K. Gupta, Tim Haines, C. M. Hoffman, D. Krakauer, P. W. Kwok, J. Lloyd‐Evans, X. -Q. Lu, D. E. Nagle, M. Potter, V. D. Sandberg, M. J. Stark, R. L. Talaga, P. R. Vishwanath, G. B. Yodh, W. Zhang
Abstract
Data from an extensive air shower detector of ultrahigh-energy cosmic rays shows shadowing of the cosmic-ray flux by the Moon and the Sun with signficance of 4.9 standard deviations. This is the first observation of such shadowing. The effect has been used to determine that the angular resolution of the detector is 0.75${\mathrm{\ifmmode^\circ\else\textdegree\fi{}}}_{\ensuremath{-}0.09\mathrm{\ifmmode^\circ\else\textdegree\fi{}}}^{+0.13\mathrm{\ifmmode^\circ\else\textdegree\fi{}}}$.
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