Read Full Article    Cited by

JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 104, NO. A3, PAGES 4629–4642, 1999

Observations of Jovian upstream events by Ulysses

Dennis Haggerty

Department of Physics and Astronomy, University of Kansas, Lawrence

T. P. Armstrong

Department of Physics and Astronomy, University of Kansas, Lawrence

Abstract

The heliosphere instrument for spectra composition and anisotropy at low energy (HISCALE) experiment on board the Ulysses spacecraft, during the Jovian flyby, measured 192 distinct 61–77 keV upstream ion events of probable Jovian origin. Event-averaged characteristics such as intensities, anisotropies, power law spectral exponents, averaged event duration, and magnetic field configurations were obtained. Within 1000 R_J , all ion observations >2.92 particles/(cm² sr s keV) were found to be of probable Jovian origin. Evidence for velocity dispersion and convecting spatial structures was discovered through detailed analysis of individual events. Jupiter was found to be a significant source of interplanetary ions and electrons.

Received 24 December 1997; accepted 17 November 1998.

Read Full Article    Cited by

Citation: Haggerty, D., and T. P. Armstrong (1999), Observations of Jovian upstream events by Ulysses, J. Geophys. Res., 104(A3), 4629–4642.

Copyright 1999 by the American Geophysical Union.