Physics – Plasma Physics
Scientific paper
Apr 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998jgr...103.6513w&link_type=abstract
Journal of Geophysical Research, Volume 103, Issue A4, p. 6513-6520
Physics
Plasma Physics
11
Interplanetary Physics: Discontinuities, Interplanetary Physics: Interplanetary Shocks, Space Plasma Physics: Kinetic And Mhd Theory, Space Plasma Physics: Shock Waves
Scientific paper
This paper reports the observations of a compound structure in space plasma composed of a slow shock layer and an adjoining rotational discontinuity layer on the postshock side. The compound structure looks like a new kind of MHD discontinuity; it may be called a double discontinuity. Two dual-spacecraft observations of double discontinuities using high-resolution magnetic field data were made in interplanetary space in 1995. The first one observed from Wind and IMP 8 is composed of a reversed slow shock and a rotational discontinuity. The second one observed from Wind and Geotail is composed of a forward slow shock and a rotational discontinuity. A double discontinuity is a stable, large-scale solar wind structure. The thickness of the slow shock layer is of a few ion inertial lengths. The flow in the preshock region has a low βi value and a large shock angle.
Fairfield D.
Fitzenreiter Richard
Kokubun Susumu
Lepping Ronald P.
Ogilvie Keith. W.
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