Table 3.
CME parameters used in EUHFORIA simulations of Event 2
| Input parameters | ||||
|---|---|---|---|---|
| CME | CME1 | CME2 | ||
| CME model | spheromak | spheromak | FRi3D | Horseshoe |
| Geometrical | ||||
| Insertion time | 9 Sep. 2014 20:14 UT | 10 Sep. 2014 20:39 UT | 10 Sep. 2014 20:14 UT | 10 Sep. 2014 20:04 UT |
| Radial speed | 450 km s−1 | 719 km s−1 | 500 km s−1 | 607 km s−1 |
| Latitude | 22° | 0° | 24° | 30° |
| Longitude | −14° | 23° | 15° | 7° |
| Half-width | – | – | 50° | 52° |
| Half-height | – | – | 30° | 12° |
| Radius | 21 R⊙ | 20 R⊙ | – | – |
| Minor Radius | – | – | – | 6 R⊙ |
| Major Radius | – | – | – | 10 R⊙ |
| Toroidal height | – | – | 13.6 R⊙ | |
| Magnetic field | ||||
| Chirality | −1 | +1( * ) | −1 | |
| Polarity | – | – | +1 | – |
| Tilt | −135° | −45° | 45° | −35° |
| Toroidal magnetic flux | 0.5 ⋅ 1014 Wb | 1 ⋅ 1014 Wb | – | |
| Total magnetic flux | – | – | 5 ⋅ 1013 Wb | |
| Axial magnetic field strength | – | – | – | 2.3 ⋅ 10−6 T |
| Twist | – | – | 1.5 | – |
| Deformation | ||||
| Flattening | – | – | 0.5 | – |
| Pancaking | – | – | 0.5 | – |
| Plasma parameters | ||||
| Mass density | 10−18 kg m−3 | 10−18 kg m−3 | 10−17 kg m−3 | 10−17 kg m−3 |
| Temperature | 0.8 ⋅ 106 K | 0.8 ⋅ 106 K | 0.8 ⋅ 106 K | 0.8 ⋅ 106 K |
Notes. The spheromak model is employed for CME1 in all simulations. Different models, that is, spheromak, FRi3D, and Horseshoe are used for CME2 in combination with CME1. ( * )FRi3D chirality is implemented with the opposite convention, that is, −1 for right-handedness and +1 for left-handedness.
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