The modulation features of the long-period cosmic ray variations in connection with the sign change of the general magnetic field of the Sun

Details The modulation features of the long-period cosmic ray variations in connection with the sign change of the general magnetic field of the Sun The modulation features of the long-period cosmic ray variations in connection with the sign change of the general magnetic field of the Sun

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icrc....5..138i&link_type=abstract

In NASA. Goddard Space Flight Center 19th Intern. Cosmic Ray Conf., Vol. 5 p 138 (SEE N85-34991 23-93)

Computer Science

Anisotropy, Cosmic Rays, Magnetic Variations, Solar Activity, Solar Magnetic Field, Spatial Distribution, Amplitudes, Convection, Diurnal Variations, Drift Rate, Neutron Counters, Particle Diffusion, Particle Motion

Scientific paper

On the basis of the model and experimental investigations, the spatial distribution of cosmic ray anisotropy for the different epochs of solar activity is studied. A solution is offered to the anisotropic diffusion equation with regard to the electromagnetic conditions for the periods of minimum and maximum solar activity and cosmic ray particle drift in a regular interplanetary magnetic field. It is shown that the long period changes amplitude and phase of the diurnal variations of cosmic rays is limited not only by convection and diffusion of particles but also by the drift effect before and after the sing change of the general magnetic field of the Sun. The calculated model is compared with the results obtained on the basis of an analysis of the experimental data from the neutron super monitor station, and it is shown that for the periods when the lines of magnetic force of the Sun come from the Northern Hemisphere the phase of the first harmonic diurnal variation is shifted forwards to an earlier time.

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