Physics – Space Physics
Scientific paper
Aug 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978ijrsp...7..200n&link_type=abstract
(Space Sciences Symposium, Andhra University, Waltair, India, Jan. 9-12, 1978.) Indian Journal of Radio and Space Physics, vol.
Physics
Space Physics
Diurnal Variations, Interplanetary Magnetic Fields, Magnetic Effects, Solar Cosmic Rays, Earth Planetary Structure, Kp Index, Solar Activity Effects, Solar Wind Velocity, Time Measurement
Scientific paper
The influence of interplanetary magnetic field sector structure and its boundary crossing on daily variation of cosmic intensity has been investigated for the years 1970-76, a period of declining solar activity and occurrence of unusually large high velocity solar wind streams. Its relationship with other correlated variables such as solar wind velocity, Sigma-Kp, and mean intensity of the cosmic rays shows a consistent behaviour throughout the period. It is found that, in general, the amplitude of the diurnal variation on the day of sector boundary crossing is lowest, whereas the time of maximum seems to be unperturbed.
Agrawal S. P.
Nigam S. K.
Singh R. L.
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