Table 1.
Flux rope properties derived from 3DCORE for the ICME2 interval.
| Parameter | Value | Unit |
|---|---|---|
| Type | SWN | – |
| Chirality | Right-handed | – |
| Longitude | 89 ± 6 | ° (HEEQ) |
| Latitude | −17 ± 5 | ° (HEEQ) |
| Orientation | 161 ± 4 | ° (HEEQ) |
| D1 au | 0.265 ± 0.027 | au |
| B1 au | 27.6 ± 2.7 | nT |
| R0 | 20.0 | R⊙ |
| t0 | June 02, 2020 02:00 UT | – |
| V0 | 666 ± 165 | km s−1 |
| VSW | 314 ± 46 | km s−1 |
| Γ | 1.35 ± 0.42 × 107 | km−1 |
| w | 0.6 ± 0.1 | – |
| δ | 1.2 ± 0.3 | – |
| τ | 20.2 ± 3.4 | – |
| na | 1.14 | – |
| nb | 1.64 | – |
Notes. D1 au and B1 au are the model diameter and axial magnetic field at 1 au, V0 the initial speed at distance R0 and at launch time t0, VSW and Γ the ambient solar wind speed and drag parameter, w a shape parameter, δ the cross section aspect ratio, τ the number of field line turns over the full torus, and na and nb the exponents for the power laws for the expansion of the diameter and decrease in the axial magnetic field, respectively. Uncertainties arise from the fitting algorithm.
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