Inversion of the Cosmic-Ray Solar Diurnal Variations

被引：0
|
作者：
I. Sabbah
机构：
[1] University of Alexandria,Department of Physics, Faculty of Science
来源：
Solar Physics | 1999年 / 186卷
关键词：
Anisotropy; Free Space; Solar Cycle; Diurnal Variation; Step Function;
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学科分类号：
摘要：
We have bounded the upper cut-off rigidity (Rc) of the cosmic-ray diurnal anisotropy during the period 1968–1995. This period covers almost three solar cycles and includes three epochs of the solar polar field reversals. The diurnal variation observed by two detectors characterized by linearly independent kernels has been inverted in order to estimate the greatest lower bound (GLB) of Rc. We obtain a step function solution for the cosmic-ray anisotropy in free space which vanishes at the GLB of Rc. The greatest lower bound shows a magnetic cycle variation. The highest value of the amplitude of the anisotropy in free space at the GLB have been estimated as well.
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页码：413 / 419
页数：6
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