We develop a three dimensional (3-D) model of the 27-day variation of galactic cosmic ray (GCR) intensity with a spatial variation of the solar wind velocity. A consistent, divergence-free interplanetary magnetic field is derived by solving the corresponding Maxwell equations with a variable solar wind speed, which reproduces in situ observed experimental data for the time interval to be analyzed (24 August 2007-28 February 2008). We perform model calculations for the GCR intensity using the variable solar wind and the corresponding magnetic field. Results are compatible with experimental data; the correlation coefficient between our model predictions and observed 27-day GCR variation is 0.80 0.05.
Modeling and experimental study of the 27-day variation of galactic cosmic-ray intensity for a solar wind velocity depending on heliolongitude
Advances in space research ; 45 , 3
2010
Aufsatz (Zeitschrift)
Englisch
IMF intensity and galactic cosmic ray modulation
Online Contents | 2002
|IMF Intensity and Galactic Cosmic Ray Modulation
British Library Conference Proceedings | 2002
|Sidereal Daily Variation of Galactic Cosmic Rays
British Library Conference Proceedings | 1999
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