Variations of anomalous and galactic cosmic ray fluxes in the northern hemisphere:ULYSSES EPAC and KET observations

Abstract

From beginning of 1995 to the end of 1997 the Ulysses spacecraft scanned a heliographic latitude range of 80 degrees in the northern hemisphere. In this paper we will discuss Ulysses Energetic Particle Composition Experiment (EPAC) and Ulysses COsmic and Solar Particle INvestigation Kiel Electron Telescope (KET) observations of different anomalous cosmic ray species and compare our results with the variation of galactic cosmic rays at approximately the same rigidities. The latitudinal gradients determined in the northern hemisphere are in agreement with Ulysses measurements during the rapid pole to pole passage in 1994/1995.