PROPAGATION OF SOLAR OSCILLATIONS THROUGH THE INTERPLANETARY MEDIUM

Time-series analysis of the fluxes of Interplanetary charged particles measured by the Ulysses and Voyager spacecraft reveals many periodic components. From 1 to 140 mu Hz, the spectral components are consisten t with those estimated (but not confirmed) for gravity-mode oscillatio ns of the Sun: from 1,000 to 4,000 mu Hz, the spectral lines closely m atch the frequencies of known solar pressure modes. These concordances imply that the solar wind and the interplanetary magnetic field trans mit solar oscillations and thus might be used to probe the interior st ructure of the Sun.