Table 1.
Geometrical relations between the effective longitudinal width of an HSS along a given longitudinal sliceλHSS, eff, the associated effective width of the HSS boundary region λbd, eff, the peak velocity in the slice vsl, max, the associated velocity gradient across the boundary region , the overall longitudinal width of the HSS λHSS, the HSS boundary region λbd, the displacement of the slice φ to the center of the HSS, the maximum velocity of the HSS vf, and the velocity of the slow solar wind vs.
For 0.5 λHSS − φ ≥ λbd | For 0.5 λHSS − φ < λbd | ||
---|---|---|---|
λHSS, eff | = | ![]() |
![]() |
λbd, eff | = | ![]() |
0.5 λHSS, eff |
vsl, max | = | vf | ![]() |
![]() |
= | ![]() |
![]() |
Notes.
The left solutions correspond to slices that cross the HSS core region, and the right solution corresponds to slices that lie purely in the northern or southern HSS boundary region.
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