Voyager 2 observations of energetic particle variations in the Ganymede wake region - A possible acceleration mechanism

Details Voyager 2 observations of energetic particle variations in the Ganymede wake region - A possible acceleration mechanism Voyager 2 observations of energetic particle variations in the Ganymede wake region - A possible acceleration mechanism

Jul 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jgr....88.5551t&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 88, July 1, 1983, p. 5551-5563.

Physics

5

Computerized Simulation, Energetic Particles, Ganymede, Particle Acceleration, Particle Trajectories, Voyager 2 Spacecraft, Charged Particles, Equations Of Motion, Space Plasmas, Trajectory Analysis, Two Dimensional Models, Jupiter, Satellites, Ganymede, Voyager 2, Observations, Velocity, Energetic Particles, Wakes

Scientific paper

Voyager 2's passage through the downstream corotation region of Ganymede found disturbances in the field and particle environment. Large fluctuations in the intensities and energy spectra of ions in the 0.1-to 4.0-MeV interval were also observed with the low energy charged particle experiment. All ion species were evidently affected, up through medium (C, N, O) nuclei. Electrons intensities, while disturbed, did not behave similarly to the ions. These effects are probably associated with the wake produced by the absorption of Jovian magnetospheric corotating plasma by Ganymede. A two-dimensional theoretical model for perturbed field in the wake region is proposed and it is shown by direct numerical simulation of exact particle trajectories that such perturbations are capable of modulating the charged particle energies to about the observed amount for the observed magnetic and plasma parameters. Analysis shows that the energization process is dependent on the pitch angles of the energetic ions and the process itself is nonadiabatic (the Larmor radius is approximately the size of the disturbance region).

Affiliated with

Also associated with

No associations

Rating

Voyager 2 observations of energetic particle variations in the Ganymede wake region - A possible acceleration mechanism does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Voyager 2 observations of energetic particle variations in the Ganymede wake region - A possible acceleration mechanism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Voyager 2 observations of energetic particle variations in the Ganymede wake region - A possible acceleration mechanism will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1628277