ISEE-3/IMP-8 observations of simultaneous upstream proton eventsUpstream 50-200 keV proton events were observed simultaneously by the low energy proton detectors on ISEE-3 and IMP-8, and the gradient from the spin averaged fluxes at the two spacecraft was calculated. The dependence of that gradient upon the angular distributions at IMP-8 was investigated as well as the distance from IMP-8 to the bow shock. The pitch angle distributions are narrow at ISEE-3 and wide and often pancake-shaped at IMP-8 with a peak near 90 degrees. This implies the existence of a weak scattering region about 5-15 earth radii upstream of the earth's bow shock.
Document ID
19820046940
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Sanderson, T. R. (European Space Agency. European Space Research and Technology Center ESTEC, Noordwijk, Netherlands)
Reinhard, R. (European Space Agency. European Space Research and Technology Center ESTEC, Noordwijk, Netherlands)
Wenzel, K.-P. (ESA Space Science Dept., Noordwijk, Netherlands)
Mitchell, D. G. (European Space Agency. European Space Research and Technology Center ESTEC, Noordwijk, Netherlands)
Roelof, E. C. (Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States)