Electron density and temperature in the Io plasma torus from Ulysses thermal noise measurements

Details Electron density and temperature in the Io plasma torus from Ulysses thermal noise measurements Electron density and temperature in the Io plasma torus from Ulysses thermal noise measurements

Nov 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993p%26ss...41.1011h&link_type=abstract

Planetary and Space Science, Volume 41, Issue 11-12, p. 1011-1020.

Physics

8

Scientific paper

During the Ulysses flyby of Jupiter, the spacecraft crossed the outer part of the Io plasma torus along a basically North-to-South trajectory at a Jovicentric distance of about 8RJ. The quasi-thermal noise measured by the Unified Radio and Plasma Wave (URAP) experiment is used to deduce the electron density and temperature along the trajectory. The density is deduced from the upper hybrid frequency line and the temperature from the spin modulation of Bernstein waves. These results are used to build a simplified Gaussian model of the torus. The density profile is roughly symmetric with respect to the centrifugal equator, with a scale height of about 0.9RJ. The density at equator crossing is twice as large as that expected from the Divine-Garrett Voyager-based model at the same radial distance. The density scale height is lower than that found by Voyager 1; it is consistent with an ion temperature of about 5 × 105K, assuming an effective mass of about 20 proton masses. The fitting of the pressure distribution, symmetric with respect to the centrifugal equator, yields a cold electron temperature of about 1.4 × 105K at the equator, which is of the same order of magnitude as found by Voyager 1.

Affiliated with

Also associated with

No associations

Rating

Electron density and temperature in the Io plasma torus from Ulysses thermal noise measurements 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 Electron density and temperature in the Io plasma torus from Ulysses thermal noise measurements, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electron density and temperature in the Io plasma torus from Ulysses thermal noise measurements will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-812676