Ejection of dust from Jupiter's gossamer ring

Details Ejection of dust from Jupiter's gossamer ring Ejection of dust from Jupiter's gossamer ring

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993natur.364..695h&link_type=abstract

Nature (ISSN 0028-0836), vol. 364, no. 6439, p. 695-699.

Physics

51

Interplanetary Dust, Interplanetary Magnetic Fields, Jupiter Rings, Particle Size Distribution, Planetary Magnetospheres, Kinetic Energy, Solar Rotation, Ulysses Mission

Scientific paper

Ways in which dust may be ejected from the vicinity of Jupiter are described. It is argued that the masses and velocities of detected particles of periodic, collimated streams of high-velocity, submicrometer-sized dust particles are best explained by an origin in Jupiter's gossamer ring. Following their ejection from the magnetosphere, the dust particles are accelerated by the IMF. It is the temporal evolution of the IMF which primarily determines the particle trajectories, and hence which particles reach the spacecraft. The present model explains the following three features observed in the Ulysses mission data: fewer streams are detected before the closest approach than after, the observed periodicity is closely related to the solar rotation period, and an extremely intense dust stream is detected immediately after the closest approach.

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