Observation of a shadow of the Moon in the underground muon flux in the Soudan 2 detector
Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields2000Vol. 61(9)
Citations Over TimeTop 14% of 2000 papers
J.H. Cobb, Marvin L. Marshak, W.W.M. Allison, G.J. Alner, D. S. Ayres, W. L. Barrett, C. Bode, P. Border, C.B. Brooks, R. Cotton, H. Courant, D. M. DeMuth, T. Fields, H. Gallagher, M. C. Goodman, R. Gran, T. Joffe–Minor, T. Kafka, S. M. S. Kasahara, W. Leeson, P. J. Litchfield, N.P. Longley, W. A. Mann, R. H. Milburn, William H. Miller, C. S. Moon, L. Mualem, A. Napier, W. P. Oliver, Gillian Pearce, E. A. Peterson, D. Petyt, L. E. Price, K. Ruddick, M. C. Sánchez, P. Sankey, J. Schneps, M. H. Schub, R. Seidlein, A. Stassinakis, J. Thron, V. V. Vassiliev, G. Villaume, S. P. Wakely, N. West, D. Wall
Abstract
A shadow of the Moon, with a statistical significance of $5\ensuremath{\sigma},$ has been observed in the underground muon flux at a depth of 2090 mwe using the Soudan 2 detector. The angular resolution of the detector is well described by a Gaussian with a sigma $<~0.3\ifmmode^\circ\else\textdegree\fi{}.$ The position of the shadow confirms that the alignment of the detector is known to better than $0.15\ifmmode^\circ\else\textdegree\fi{}$ and has remained stable during ten years of data taking.
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