Corotating interaction regions in the outer heliosphere: Report of Working Group 4

We discuss the structure and evolution of CIRs and their successors in the outer heliosphere. These structures undergo significant evolution as they are convected to greater heliocentric distances. A progression of different types of structure are observed at increasing distance from the Sun. Simila...

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Published inSpace science reviews Vol. 89; no. 1-2; pp. 269 - 305
Main Authors Gazis, PR, McDonald, F B, Burger, R A, Chalov, S, Decker, R B, Dwyer, J, Intriligator, D S, Jokipii, J R, Lazarus, A J, Mason, G M, Pizzo, V J, Potgieter, MS, Richardson, I G, Lanzerotti, L J
Format Journal Article
LanguageEnglish
Published 01.01.1999
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Summary:We discuss the structure and evolution of CIRs and their successors in the outer heliosphere. These structures undergo significant evolution as they are convected to greater heliocentric distances. A progression of different types of structure are observed at increasing distance from the Sun. Similar structures are observed at similar heliocentric distance at different portions of the solar cycle. CIRs and their successors are associated with many important physical processes in the outer heliosphere. We discuss the relationship between these structures and recurrent phenomena such as cosmic ray variations, and review some of the associated theoretical models on the role of corotating structures and global merged interaction regions (GMIRs) in global cosmic ray modulation. We also discuss some outstanding questions related to the origin of non-dispersive quasi-periodic particle enhancements associated with CIRs and their successors in the outer heliosphere.
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ISSN:0038-6308
DOI:10.1023/A:1005270027347