Accession Number : ADA018098

Title :   Variations of the Calculated Cosmic-Ray Equator Over a 20-Year Interval.

Descriptive Note : Interim rept.,

Corporate Author : AIR FORCE CAMBRIDGE RESEARCH LABS HANSCOM AFB MASS

Personal Author(s) : Shea,M. S. ; Smart,D. F.

Report Date : 26 NOV 1975

Pagination or Media Count : 7

Abstract : The location of the cosmic-ray equator for two different epochs has been determined by calculating the vertical cutoff rigidities in the equatorial region using geomagnetic field models appropriate for 1965 and 1975. A comparison of these results with the cosmic-ray equator determined for Epoch 1955 shows that whereas no significant changes for this 20-year interval are found in the longitudes between 0 degrees and 270 degrees E, the theoretical equator has shifted slightly northward in the longitude range 280 degrees to 350 degrees E.

Descriptors :   *Cosmic rays, Geomagnetism, Computations

Subject Categories : Astrophysics
      Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE