Physics
Scientific paper
Feb 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978jgr....83..717s&link_type=abstract
Journal of Geophysical Research, vol. 83, Feb. 1, 1978, p. 717-724.
Physics
78
Interplanetary Magnetic Fields, Magnetic Measurement, Pioneer 11 Space Probe, Spacecraft Trajectories, Current Sheets, Heliometers, Histograms, Interplanetary Trajectories, Latitude Measurement
Scientific paper
In the past, observations of the sector structure of the interplanetary magnetic field have been limited to a heliographic latitude of +/- 7.25 deg because spacecraft trajectories have consistently been in or near the ecliptic. The postencounter trajectory of Pioneer 11, which is now en route from Jupiter to Saturn, takes this spacecraft to much higher latitudes than have been previously explored. A study of the sector structure has in this connection been conducted during the ascent of Pioneer 11 to a maximum heliographic latitude of 16 deg. The Pioneer 11 observations demonstrate the presence in interplanetary space of an equatorial current sheet tilted at an angle of about 15 deg to the solar equatorial plane. Thus there is actually only one sector boundary in interplanetary space, not several, as would have been the case if the orientation had been meridional.
Rosenberg Ronald L.
Smith Edward. J.
Tsurutani Bruce T.
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