Penetration of Solar Protons and Alphas to the Geomagnetic Equator
- 23 September 1968
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 21 (13), 929-933
- https://doi.org/10.1103/physrevlett.21.929
Abstract
Simultaneous spectral observations of low-energy solar particles in interplanetary space and in the magnetosphere on the equator strongly imply that these particles have essentially free access to the outer magnetosphere through a very effective diffusion mechanism which preserves the spectral shapes and the flux magnitudes. These observations further imply that measurements of solar-particle arrival time over the polar caps are not sufficient to distinguish between open or closed magnetosphere models.Keywords
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