BECAUSE of the interstellar medium, the supersonic solar wind is believed to undergo a shock transition to subsonic flow at a distance Rh from the centre of the Sun13. Estimates3 placing the position of this shock (heliosphere boundary) at a radius Rh 50 A.U. have recently been questioned by both observational46 and theoretical7 studies which suggest the heliosphere radius to be .Rh510 A.U. Such a heliosphere boundary position could profoundly affect the configuration of the Jovian magnetosphere, and the location of the heliosphere boundary may be important in understanding the inverse correlation between the sunspot number and the probability of Jovian decametric radio emission8.
- 1 - general ; 2 - general science & technology ; 3 - general science & technology
- 1 - sciences appliquees, technologies et medecines ; 2 - sciences exactes et technologie ; 3 - terre, ocean, espace ; 4 - astronomie