Journal article
Plasma Observations Near Jupiter: Initial Results from Voyager 2
Science (American Association for the Advancement of Science), Vol.206(4421), pp.972-976
11/23/1979
DOI: 10.1126/science.206.4421.972
PMID: 17733917
Abstract
The first of at least nine bow shock crossings observed on the inbound pass of Voyager 2 occurred at 98.8 Jupiter radii (RJ) with final entry into the magnetosphere at 62 RJ. On both the inbound and outbound passes the plasma showed a tendency to move in the direction of corotation, as was observed on the inbound pass of Voyager 1. Positive ion densities and electron intensities observed by Voyager 2 are comparable within a factor of 2 to those seen by Voyager 1 at the same radial distance from Jupiter; the composition of the magnetospheric plasma is again dominated by heavy ions with a ratio of mass density relative to hydrogen of about 100/1. A series of dropouts of plasma intensity near Ganymede may be related to a complex interaction between Ganymede and the magnetospheric plasma. From the planetary spin modulation of the intensity of plasma electrons it is inferred that the plasma sheet is centered at the dipole magnetic equator out to a distance of 40 to 50 RJ and deviates from it toward the rotational equator at larger distances. The longitudinal excursion of the plasma sheet lags behind the rotating dipole by a phase angle that increases with increasing radial distance.
Details
- Title: Subtitle
- Plasma Observations Near Jupiter: Initial Results from Voyager 2
- Creators
- H. S Bridge - Massachusetts Institute of TechnologyJ. W Belcher - Massachusetts Institute of TechnologyA. J Lazarus - Massachusetts Institute of TechnologyJ. D Sullivan - Massachusetts Institute of TechnologyF Bagenal - Massachusetts Institute of TechnologyR. L McNutt - Massachusetts Institute of TechnologyK. W Ogilvie - Goddard Space Flight CenterJ. D Scudder - Goddard Space Flight CenterE. C Sittler - Goddard Space Flight CenterV. M Vasyliunas - Max Planck SocietyC. K Goertz - Max Planck Society
- Resource Type
- Journal article
- Publication Details
- Science (American Association for the Advancement of Science), Vol.206(4421), pp.972-976
- DOI
- 10.1126/science.206.4421.972
- PMID
- 17733917
- ISSN
- 0036-8075
- eISSN
- 1095-9203
- Language
- English
- Date published
- 11/23/1979
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199731702771
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