The Connection Between High-speed Streams from Coronal Holes and Cosmic Ray Intensity
Abstract
The effect of high-speed solar wind streams from low-latitude coronal holes on cosmic ray intensity is studied. The database on Forbush effects created at IZMIRAN, with cosmic ray density and anisotropy calculated by the Global Survey Method (GSM) on the basis of Neutron Monitor network data has been used. From the analysis of events it was found that the highest correlation of the FE magnitude was found with the magnetic parameters (IMF intensity and critical CR rigidity), but not with solar wind speed. As a rule, Forbush effects caused by coronal hole streams were small but prolonged.
- Publication:
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International Cosmic Ray Conference
- Pub Date:
- 2013
- Bibcode:
- 2013ICRC...33.3567K
- Keywords:
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- cosmic ray;
- coronal hole;
- Forbush effect.