Enhanced cosmic ray anisotropies and the extended solar magnetic field

Journal Article · Thu Oct 01 04:00:00 EDT 1981 · J. Geophys. Res.; (United States)

DOI:https://doi.org/10.1029/JA086iA11p08845· OSTI ID:5874503

Swinson, D B; Saito, T; Mori, S

Saito's two-hemisphere model for the three-dimensional magnetic structure of the inner heliomagnetosphere is used to determine the orientation of the two solar magnetic hemispheres. This orientation, as viewed from the earth, varies throughout the year. The orientations during 1974 are presented and are confirmed by satellite data for the interplanetary magnetic field. These data suggest a role for the field component perpendicular to the ecliptic plane B/sub z/ in giving rise to cosmic ray anisotropies detected at the earth. It is shown that an enhanced solar diurnal variation in cosmic ray intensity at the earth can arise from the constructive interference of three cosmic ray anisotropies, two of which depend on the direction of the interplanetary magnetic field. This is demonstrated by using cosmic ray data from the Nagaya muon telescope and underground muon telescopes in Bolivia, Embudo (New Mexico), and Socorro (New Mexico).

• Research Organization: Department of Physics and Astronomy, The University of New Mexico, Albuquerque, New Mexico 87131
• OSTI ID: 5874503
• Journal Information: J. Geophys. Res.; (United States), Journal Name: J. Geophys. Res.; (United States) Vol. 86:A11; ISSN JGREA
• Country of Publication: United States
• Language: English

Related Subjects

640101* -- Astrophysics & Cosmology-- Cosmic Radiation
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC RAY FLUX
COSMIC RAY PROPAGATION
DAILY VARIATIONS
INTERPLANETARY MAGNETIC FIELDS
MAGNETIC FIELD CONFIGURATIONS
MAGNETIC FIELDS
MAIN SEQUENCE STARS
RADIATION FLUX
SEASONAL VARIATIONS
STARS
SUN
VARIATIONS