  The sun as an oscillator produces frequencies which propagate in the
heliosphere, via solar wind, to the terrestrial magnetosphere. We searched for
those frequencies in the parameters of the near Earth solar plasma and the
geomagnetic indices for the past four solar cycles. The solar wind parameters
used in this work are the interplanetary magnetic field, plasma beta, Alfven
Mach number, solar wind speed, plasma temperature, plasma pressure, plasma
density and the geomagnetic indices DST, AE, Ap and Kp. We found out that each
parameter of the solar wind exhibit certain periodicities which differentiate
in each cycle. Our results indicate intermittent periodicities in our data,
some of them shared between the solar wind parameters and geomagnetic indices.
