K-Coronameter observations and potential field model comparison in 1976 and 1977
Abstract
Results of determining the shape and location of the heliospheric current sheet from a potential field model and from K-coronameter observations are compared. Interplanetary magnetic field polarities as observed by IMP 8, Helios 1 and 2, and Voyager 2 spacecraft were used to test the two methods over the period May 1976 to August 1977 throughout 18 Carrington rotations. The computed heliospheric current sheets from both methods had a quasi-stationary four-sector structure and very similar shapes. Agreement between interplanetary magnetic field polarity and the results from the potential field model was found on 79% of the days, while agreement between the interplanetary field polarity and the polarities derived from the K-coronameter data was found on 87% of the days.
- Publication:
-
Journal of Geophysical Research
- Pub Date:
- July 1984
- DOI:
- 10.1029/JA089iA07p05381
- Bibcode:
- 1984JGR....89.5381B
- Keywords:
-
- Current Sheets;
- Heliosphere;
- Interplanetary Magnetic Fields;
- Magnetic Measurement;
- Potential Fields;
- Data Reduction;
- Polarity;
- Solar Corona;
- Solar Rotation