Plasma pressure in the environment of Jupiter, inferred from Voyager 1 magnetometer observations

Details Plasma pressure in the environment of Jupiter, inferred from Voyager 1 magnetometer observations Plasma pressure in the environment of Jupiter, inferred from Voyager 1 magnetometer observations

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jgr....9415055c&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 94, Nov. 1, 1989, p. 15055-15061.

Physics

12

Magnetospheric Instability, Mathematical Models, Planetary Magnetic Fields, Planetary Magnetospheres, Plasma Pressure, Iteration, Jupiter (Planet), Magnetometers, Plasma Dynamics, Voyager 1 Spacecraft

Scientific paper

A model combining the internal magnetic field with a self-consistent model of the Jovian magnetodisc was fitted to the Voyager 1 Jovian magnetic field data by means of a generalized inverse technique. The model parameters included the internal field spherical harmonic coefficients as well as with parameters describing the plasma distribution in the magnetosphere. Assuming that the pressure in the middle and outer magnetosphere is related to the unit flux tube volume V through PV exp gamma = const, the model fit yielded a value of 0.88 for gamma. If the hot (30 keV) plasma is transported adiabatically inward under the interchange instability triggered by centrifugal force of the heavy torus ions, losses are not sufficient to account for such a low value of gamma beyond L = 10. Closer to the planet, as the outer edge of the Io plasma torus is approached, PV exp gamma is found to decrease inward, as expected from the particle measurements, which identified an inner boundary of the particle fluxes in that region. With the present stage of the development of magnetodisc models, secular variations of the internal field still remain difficult to estimate.

Affiliated with

Also associated with

No associations

Rating

Plasma pressure in the environment of Jupiter, inferred from Voyager 1 magnetometer observations 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 Plasma pressure in the environment of Jupiter, inferred from Voyager 1 magnetometer observations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Plasma pressure in the environment of Jupiter, inferred from Voyager 1 magnetometer observations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1616659