The intensity variations of solar and galactic cosmic rays with azimuthal angle in the polar region |
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| Authors: | DJ Heristchi J-P Legrand |
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| Institution: | Observatoire de Meudon, Meudon, France;Groupe de Recherches Ionosphériques, Saint Maur, France |
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| Abstract: | A balloon-born multidirectional detector is used to measure the intensity variation of galactic and solar cosmic rays with the azimuthal angle, the zenith angle being maintained at 60°. In polar regions, the intensity towards the north is found to be 20% larger than that towards the south. It is shown that this anisotropy does not originate in interplanetary space and is not produced by a magnetospheric source. It is suggested that the effect is due to propagation effects within the magnetosphere. |
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