INTERACTION BETWEEN WHISTLER-MODE WAVES AND ELECTRONS IN THE VICINITY OF INTERPLANETARY SHOCKS AS SEEN BY ULYSSES - A PRELIMINARY-STUDY

We present a study of wave particle interaction in the vicinity of interplanetary shocks in the ecliptic plane, as observed by the Ulysses spacecraft. We focus here on some events, for which electromagnetic waves are observed, mainly down-stream of the shock. The whistler mode waves are studied by means of the Unified RAdio and Plasma wave experiment (URAP) and the electron distribution functions are obtained from the Ulysses' plasma experiment (SWOOPS). The resul ts are discussed in the light of electron-cyclotron instabilities.