An interplanetary planar magnetic structure oriented at a large (about 80 deg) angle to the Parker spiral

Details An interplanetary planar magnetic structure oriented at a large (about 80 deg) angle to the Parker spiral An interplanetary planar magnetic structure oriented at a large (about 80 deg) angle to the Parker spiral

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990georl..17.1025f&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 17, July 1990, p. 1025-1028.

Physics

21

Interplanetary Magnetic Fields, Magnetic Field Configurations, Radiation Pressure, Solar Flares, Solar Wind, Circular Polarization, Dynamic Pressure, Interplanetary Space, Polarized Radiation

Scientific paper

Magnetic field structures in the solar wind, characterized by a variation of the field vectors within a plane inclined to the ecliptic ('Planar Magnetic Structures', PMSs), were reported recently (Nakagawa et al., 1989). These PMSs have the property that the plane of variation of the field also contains the nominal Parker spiral direction. An observation of a PMS where the direction of the line of intersection of the plane of field variation with the ecliptic plane makes a large (about 80 deg) angle to the Parker spiral direction is presented. Furthermore, the angular variables of the field (1) vary over a restricted range, and (2) are linearly related. The latter property is related to the former. Currently proposed models for the origin of PMS, inasmuch as they require field configurations which retain strict alignment with the Parker spiral direction from formation to observation, are probably incomplete.

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