Table 1
Fit parameters for the toroidal models.
| Model | r 0 | R 0 | R 0 / r 0 | ϑ n | φ n | U 0 | D | p y | p z | B 00 | b 0 r 0 | ΔB | |
| [AU] | [AU] | [deg] | [deg] | [km s-1] | [km s-1 h-1] | [nT] | |||||||
|
|
|||||||||||||
| Marubashi & | 0.075 | 0.355 | 4.7 | 49.2 | 244.2 | 446.7 | 2.93 | − 0.880 | − 0.393 | 20.8 | (− 1.50) | (0.170) | |
| Lepping (2007) | |||||||||||||
| MT field | 0.096 | 0.334 | 3.5 | 45.0 | 240.3 | 442.8 | 2.80 | − 0.814 | − 0.473 | 21.9 | 0.162 | ||
| Uniform-twist field | 0.111 | 0.311 | 2.8 | 40.2 | 238.7 | 440.2 | 2.69 | − 0.786 | − 0.587 | 25.3 | − 2.11 | 0.136 | |
| Zero-order solution | 0.101 | 0.333 | 3.3 | 43.6 | 238.3 | 441.2 | 2.73 | − 0.729 | − 0.534 | 26.1 | − 2.30 | 0.151 | |
| First-order solution | 0.058 | 0.739 | 12.7 | 51.5 | 249.4 | 445.0 | 2.89 | − 0.528 | − 0.399 | 35.5 | − 3.77 | 0.155 | |
Notes. The parameters by Marubashi & Lepping (2007) served as initial parameters for the other models. The value of b0r0 is not present in their model (so it is given in parentheses), but it was used as the initial parameter for the other models (except for the MT field, for which the twist is not a parameter, but varies, see Fig. 8). The value of ΔB provided by Marubashi & Lepping (2007) is given for comparison, but in parentheses because it was not calculated here.
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