Magnetic loop behind an interplanetary shock - Voyager, Helios, and IMP 8 observations

Details Magnetic loop behind an interplanetary shock - Voyager, Helios, and IMP 8 observations Magnetic loop behind an interplanetary shock - Voyager, Helios, and IMP 8 observations

Aug 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jgr....86.6673b&link_type=abstract

Journal of Geophysical Research, vol. 86, Aug. 1, 1981, p. 6673-6684.

Physics

624

Interplanetary Magnetic Fields, Satellite Observation, Shock Waves, Cosmic Plasma, Explorer 50 Satellite, Flow Velocity, Helios Satellites, Loops, Magnetic Clouds, Magnetic Field Configurations, Magnetohydrodynamic Flow, Plasma Density, Plasma Sheaths, Plasma Temperature, Plasma Turbulence, Pressure Distribution, Shock Discontinuity, Voyager Project

Scientific paper

The flow behind an interplanetary shock was analyzed through the use of magnetic field and plasma data from five spacecraft, with emphasis on the magnetic cloud identified by a characteristic variation of the latitude angle of the magnetic field. The size of the cloud was found to be about 0.5 AU in radial extent and greater than 30 deg in azimuthal extent, with its front boundary almost normal to the radial direction. Because the field direction of the magnetic cloud as it moved past the spacecraft was observed to rotate nearly parallel to a plane, it is thought that the field configuration of the cloud was essentially two-dimensional. These results further suggest that the lines of force in the magnetic cloud formed loops, but it could not be determined whether these loops were open or closed.

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