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.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Modeling and experimental study of the 27-day variation of galactic cosmic-ray intensity for a solar wind velocity depending on heliolongitude



    Published in:

    Publication date :

    2010




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English



    Classification :

    BKL:    55.60 Raumfahrttechnik / 50.93 / 55.60 / 50.93 Weltraumforschung





    IMF intensity and galactic cosmic ray modulation

    Ahluwalia, H.S. | Online Contents | 2002


    IMF Intensity and Galactic Cosmic Ray Modulation

    Ahluwalia, H. S. / International Council of Scientific Unions | British Library Conference Proceedings | 2002


    Sidereal Daily Variation of Galactic Cosmic Rays

    Hall, D. L. / Munakata, K. / Yasue, S. et al. | British Library Conference Proceedings | 1999