Observations of plasmas associated with the magnetic signature of a plasmoid in the distant magnetotail

Details Observations of plasmas associated with the magnetic signature of a plasmoid in the distant magnetotail Observations of plasmas associated with the magnetic signature of a plasmoid in the distant magnetotail

Dec 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994georl..21.2967f&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 21, no. 25, p. 2967-2970

Physics

25

Electron Plasma, Flow Velocity, Geomagnetic Tail, Magnetic Signatures, Magnetohydrodynamic Flow, Molecular Ions, Planetary Magnetic Fields, Satellite Observation, Space Plasmas, Electron Density (Concentration), Flow Distribution, Geophysical Satellites, Magnetic Field Configurations, Magnetic Flux, Pressure Measurement, Proton Density (Concentration), Velocity Distribution

Scientific paper

The three-dimensional electron and positive ion velocity distributions were examined for four events for which the magnetic signature of plasmoids occurred at the Geotail spacecraft position in Earth's distant magnetotail. The proton bulk parameters and the electron velocity distributions for one of the events are presented in order to characterize the qualitative character of the set of events. The north-to-south turnings of the magnetic field that were taken for evidence of the passage of a plasmoid were often accompanied by a significant strong core of B(sub y) that was centered on the transition of B(sub z) from north to south. The magnetic signatures thus appeared to be more indicative of flux ropes than of classical plasmoids with weak core fields. The proton and electron bulk velocities in these magnetic structures are not equal, a situation that provides an earthward current. The plasma beta was typically one or greater. Counterstreaming of low-energy electrons was often found on the magnetic field lines around the central magnetic core and suggested the existence of a closed field line topology in these regions. These events appeared to be the tailward flowing debris from acceleration processes occuring in the vicinity of a separator positioned nearer to Earth.

Affiliated with

Also associated with

No associations

Rating

Observations of plasmas associated with the magnetic signature of a plasmoid in the distant magnetotail 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 Observations of plasmas associated with the magnetic signature of a plasmoid in the distant magnetotail, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observations of plasmas associated with the magnetic signature of a plasmoid in the distant magnetotail will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1409687