Spatial variation and evolution of heliospheric sector structure

Details Spatial variation and evolution of heliospheric sector structure Spatial variation and evolution of heliospheric sector structure

Feb 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jgr....94.1245b&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 94, Feb. 1, 1989, p. 1245-1260.

Physics

61

Heliosphere, Interplanetary Magnetic Fields, Solar Magnetic Field, Sunspot Cycle, Current Sheets, Polarity, Spatial Distribution, Voyager 1 Spacecraft, Voyager 2 Spacecraft

Scientific paper

The magnetic sector polarity at the sun and in the IMF was surveyed during about three quarters of sunspot cycle 21 using ground-based photospheric magnetic field observations and spacecraft observations, including Voyagers 1 and 2 and Pioneer Venus Orbiter data. The location of the heliospheric current sheet near the sun throughout the period 1977-1985 is calculated. The large-scale magnetic polarity structure was in almost continuous evolution throught this period. IMF polarity patterns derived from spacecraft data are compared with the pattern observed at the sun, showing that sector pattern stability decreases with increasing heliocentric distance.

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