Observation of the shadows of the Moon and Sun using 100 TeV cosmic rays

A. Borione; M. Catanese; C. E. Covault; J. W. Cronin; B. E. Fick; K. G. Gibbs; K. D. Green; S. Hauptfeld; D. Kieda; H. A. Krimm; N. C. Mascarenhas; J. Matthews; T. A. McKay; D. Müller; B. J. Newport; D. Nitz; R. A. Ong; L. J. Rosenberg; D. Sinclair; J. C. van der Velde

doi:10.1103/PhysRevD.49.1171

Observation of the shadows of the Moon and Sun using 100 TeV cosmic rays

A. Borione, M. Catanese, C. E. Covault, J. W. Cronin, B. E. Fick, K. G. Gibbs, K. D. Green, S. Hauptfeld, D. Kieda, H. A. Krimm, N. C. Mascarenhas, J. Matthews, T. A. McKay, D. Müller, B. J. Newport, D. Nitz, R. A. Ong, L. J. Rosenberg, D. Sinclair, and J. C. van der Velde

Phys. Rev. D 49, 1171 – Published 1 February 1994

Abstract

The Chicago Air Shower Array has imaged the shadows of the Moon and Sun and measured the angular diameter of the Moon with cosmic rays having energies above about 100 TeV. The shadow of the Sun shows effects attributed to the curvature of cosmic rays by the solar magnetic field. This study verifies that our direction reconstruction has no serious systematic errors, and provides a measure of the angular resolution of the array.

Received 12 March 1993

DOI:https://doi.org/10.1103/PhysRevD.49.1171

Authors & Affiliations

A. Borione¹, M. Catanese², C. E. Covault¹, J. W. Cronin¹, B. E. Fick¹, K. G. Gibbs¹, K. D. Green², S. Hauptfeld¹, D. Kieda³, H. A. Krimm^1,*, N. C. Mascarenhas^1,†, J. Matthews², T. A. McKay^1,‡, D. Müller¹, B. J. Newport¹, D. Nitz², R. A. Ong¹, L. J. Rosenberg^1,§, D. Sinclair², and J. C. van der Velde²

¹Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637
²Department of Physics, University of Michigan, Ann Arbor, Michigan 48109
³Department of Physics, University of Utah, Salt Lake City, Utah 84112

^*Present address: Center for Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139.
^†Present address: Norman Bridge Laboratory of Physics, California Institute of Technology, Pasadena, CA 91125.
^‡Present address: Fermi National Accelerator Laboratory, Batavia, IL 60510.
^§Present address: Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139.

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Vol. 49, Iss. 3 — 1 February 1994

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