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

• Published in: Physical review. D, Particles and fields Vol. 49; no. 3; pp. 1171 - 1177
• Main Authors: Borione, A, Catanese, M, Covault, CE, Cronin, JW, Fick, BE, Gibbs, KG, Green, KD, Hauptfeld, S, Kieda, D, Krimm, HA, Mascarenhas, NC, Matthews, J, McKay, TA, Müller, D, Newport, BJ, Nitz, D, Ong, RA, Rosenberg, LJ, Sinclair, D, van der Velde JC
• Format: Journal Article
• Language: English
• Published: United States 01-02-1994
• Subjects: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COSMIC RADIATION; COSMIC RAY FLUX; COSMIC SHOWERS; IONIZING RADIATIONS; MAGNETIC FIELDS; MAIN SEQUENCE STARS; MOON; RADIATION FLUX; RADIATIONS; SATELLITES; SECONDARY COSMIC RADIATION; SHADOW EFFECT; SHOWERS; STARS 661320 > Auroral, Ionospheric, & Magnetospheric Phenomena > (1992-); SUN
• ISSN: 0556-2821; 1089-4918
• DOI: 10.1103/PhysRevD.49.1171

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.