Abstract
The simple tilted dipole picture of Corotating Interaction Regions which prevailed during the first polar pass of Ulysses no longer applies since the Sun entered a more active phase. Recent observations show that CIRs still persist, though the large polar coronal holes of solar minimum shrink to smaller areas and move to lower latitudes. We present 3-D simulations for the cosmic-ray intensity variations in a model with non-polar high speed streams. Latitudinal and recurrent time-variations are discussed, but more detailed and realistic simulations are required before quantitative comparisons with observations can be made.
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Kóta, J., Jokipii, J. Cosmic Ray Transport in a Heliospheric Magnetic Field with Non-Polar Coronal Holes. Space Science Reviews 97, 327–330 (2001). https://doi.org/10.1023/A:1011893420841
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DOI: https://doi.org/10.1023/A:1011893420841