Solar modulation of galactic cosmic rays during the last five solar cycles |
| |
| Institution: | 1. Laboratory of Functional and Molecular Imaging, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA;2. Developmental Neuronal Plasticity Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA;3. Alberta Children''s Hospital Research Institute (ACHRI), Cumming School of Medicine University of Calgary, Calgary, AB T2N 4N1, Canada;1. Department of Automation and Systems (DAS), UFSC, PO BOX 476, Florianópolis, SC 88040-900, Brazil;2. Department of Control Engineering and System Analysis (SAAS), ULB, Brussels B-1050, Belgium |
| |
| Abstract: | We study the cosmic ray modulation during different solar cycles and polarity states of the heliosphere. We determine (a) time lag between the cosmic ray intensity and the solar variability, (b) area of the cosmic ray intensity versus solar activity modulation loops and (c) dependence of the cosmic ray intensity on the solar variability, during different solar activity cycles and polarity states of the heliosphere. We find differences during odd and even solar cycles. Differences during positive and negative polarity periods are also found. Consequences and implications of the observed differences during (i) odd and even cycles, and (ii) opposite polarity states (A<0 and A>0) are discussed in the light of the modulation models, including drift effects. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
