Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000georl..27.2349s&link_type=abstract
Geophysical Research Letters, Volume 27, Issue 15, p. 2349-2352
Astronomy and Astrophysics
Astrophysics
4
Interplanetary Physics: Cosmic Rays, Magnetospheric Physics: Energetic Particles, Trapped, Solar Physics, Astrophysics, And Astronomy: Solar Activity Cycle
Scientific paper
Solar cycle variations in the intensity of geomagnetically trapped anomalous cosmic ray (ACR) oxygen are demonstrated by ~7 years of data from the SAMPEX satellite. They correspond to similar variations in the interplanetary ACR source. Trapped particle losses during the approach to solar maximum are not associated with geomagnetic activity and may be consistent with atmospheric energy degradation. The average trapped particle pitch angle distribution and energy spectra support this interpretation in which both source and loss rates are proportional to atmospheric density.
Cummings Alan C.
Cummings Jay R.
Leske Richard A.
Mewaldt Richard A.
Selesnick Richard S.
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