Influence of the Solar Global Magnetic Field Structure Evolution on CMEs

Abstract

The paper considers the influence of the solar global magnetic field structure (GMFS) cycle evolution on the occurrence rate and parameters of coronal mass ejections (CMEs) in cycles 23-24. It has been shown that over solar cycles, CMEs are not distributed randomly, but they are regulated by evolutionary changes in the GMFS. It is proposed, that the generation of magnetic Rossby waves in the solar tachocline results in the GMFS cycle changes. Each Rossby wave period favors a particular GMFS. It is proposed that the changes in wave periods result in the GMFS reorganization and consequently in CME location, occurrence rate, and parameter changes. The CME rate and parameters depend on the sharpness of the GMFS changes, the strength of the global magnetic field and the phase of a cycle.

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Cited by in corpus (5)

• Stellar Coronal Mass Ejections I. Estimating occurrence frequencies and mass-loss rates
• Stellar coronal mass ejections II. Constraints from spectroscopic observations
• Coronal Hole and Solar Global Magnetic Field Evolution in 1976-2012
• Determination of the Coronal and Interplanetary Magnetic-Field Strength and Radial Profiles from the Large-Scale Photospheric Magnetic Fields
• Formation and evolution of coronal holes during the rising phase of cycle 23