Other
Scientific paper
Jul 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jgr....90.6627n&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 90, July 1, 1985, p. 6627-6630.
Other
11
Alignment, Discontinuity, Magnetohydrodynamic Flow, Solar Magnetic Field, Solar Wind Velocity, Histograms, Surface Waves
Scientific paper
Three-dimensional IMP 8 and Voyager 2 plasma and field data are used to investigate the relative changes in direction of the velocity and magnetic field vectors across tangential discontinuities in the solar wind. It is found that Δv and ΔB/ρ1/2 are closely aligned either parallel or antiparallel to each other in the sense associated with the propagation of Alfvén waves or rotational discontinuities outward from the sun. This alignment is observed at all solar distances between 1 and 2.2 AU and is independent of the solar wind stream structure. Several possible causes of the effect are briefly discussed, including interplanetary turbulence, the propagation of large-amplitude Alfvénic fluctuations traveling independently through the solar wind on both sides of the discontinuities, and the propagation of surface waves on tangential discontinuities.
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