Statistical study of influence of the ULF waves on Earth foreshock plasma properties

The parameters of the solar wind plasma are modified upstream the Earth's bow shock, in the ion foreshock region, which is typically observed at quasi-parallel bow shock. Associated ULF waves are created due to the interaction of the solar wind plasma with the ions reflected at the bow shock where they generate fast magnetosonic waves with an in-phase relationship between the ion flux and magnetic field fluctuations. Using multipoint observations from the THEMIS spacecraft fleet located in the foreshock, we present statistical maps of a modification of solar wind parameters due to foreshock processes (solar wind heating and deceleration, enhancements of electric and magnetic field fluctuation levels associated with specific ULF waves, etc.). Special attention is devoted to intervals of the radial interplanetary magnetic field that creates the foreshock upstream of a whole dayside bow shock.