Physics
Scientific paper
Jul 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jgr....89.5395n&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 89, July 1, 1984, p. 5395-5408. Research sponsored by the U.S. Department
Physics
96
Discontinuity, Plasma Dynamics, Solar Rotation, Solar Wind, Adiabatic Conditions, International Sun Earth Explorer 3, Plasma Density, Solar Magnetic Field, Solar Physics
Scientific paper
An analysis is made of interplanetary tangential and rotational solar wind discontinuities (TD and RD) and comparisons are made between the features of RDs and TDs. An ISEE 3 field and positive ion data set from 1978 includes high time resolution magnetometer data and is used for the comparisons, as are data from a positive ion analyzer. The field magnitude of RDs remains constant as the field rotates, while that of a TD passes through a local minimum. First and second adiabatic invariants for protons and He abundances are usually also conserved for RDs but not for TDs. The velocity change for an RD across a discontinuity is smaller than that predicted by MHD theory. Finally, plasma conditions at a discontinuity more closely resemble RDs than TDs.
Clay Douglas R.
Goldstein Bruce E.
Neugebauer Matthias
Tsurutani Bruce T.
Zwickl R. D.
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