Open Access
Table 1.
Full list of OSPREI free parameters for the four CME events.
| OSPREI Input | Event 1 | Event 2 | Event 3 | Event 4 | Source |
|---|---|---|---|---|---|
| CME parameters | |||||
| Date | 21 June 2020 | 9 June 2021 | 7 November 2021 | 26 January 2022 | |
| Start time (t0) | 18:00 UT | 12:00 UT | 13:00 UT | 21:00 UT | EUV |
| Initial Carrington latitude (θ) | −18° | 26° | 15° | −17° | Magnetogram |
| Initial Carrington longitude (ϕ) | 340° | 77° | 78° | 30° | Magnetogram |
| Initial tilt (ψ) | 15° | 140° | 110° | 60° | Magnetogram |
| Flux rope handedness (H) | + | – | – | + | EUV/HHR |
| Initial nose height (R0) | 1.5 R⊙ | 1.1 R⊙ | 1.1 R⊙ | 1.1 R⊙ | EUV |
| Initial slow-rise velocity (VR0) | 30 km s−1 | 100 km s−1 | 30 km s−1 | 50 km s−1 | Estimated |
| Start of rapid acceleration (R1) | 4 R⊙ | 1.3 R⊙ | 4.8 R⊙ | 1.1 R⊙ | Estimated |
| Height of max coronal velocity (R2) | 20 R⊙ | 5 R⊙ | 8 R⊙ | 3 R⊙ | Estimated |
| Max coronal velocity (VR2) | 350 km s−1 | 600 km s−1 | 650 km s−1 | 500 km s−1 | GCS |
| Angular width (AW) | 30° | 35° | 30° | 45° | GCS |
| Perpendicular AW (AW⊥) | 10° | 15° | 15° | 20° | GCS |
| Flux rope initial magnetic field (B0) | 1200 nT | 4000 nT | 3200 nT | 2500 nT | Estimated |
| Flux rope initial temperature (T0) | 2.11 × 106 K | 4.44 × 106 K | 2.75 × 106 K | 2.31 × 106 K | Estimated |
| CME mass (MCME) | 2 × 1015 g | 1 × 1016 g | 7 × 1015 g | 6 × 1015 g | Estimated |
| Coronal axis aspect ratio (δAx) | 0.6 | 0.6 | 0.6 | 0.7 | Fine-tuned |
| Coronal cross-section aspect ratio (δCS) | 1 | 1 | 1 | 1 | Default |
| Adiabatic index (γ) | 1.66 | 1.33 | 1.5 | 1.66 | Fine-tuned |
| Interplanetary expansion factor (fexp) | 0.50 | 0.25 | 0.50 | 0.85 | Fine-tuned |
| Ambient medium parameters | |||||
| Drag coefficient (CD) | 0.9 | 0.8 | 1 | 1 | Fine-tuned |
| Solar wind speed (VSW) | 300 km s−1 | 350 km s−1 | 300 km s−1 | 350 km s−1 | PSP data |
| Solar wind density (NSW) | 25 cm−3 | 25 cm−3 | 55 cm−3 | 20 cm−3 | PSP data |
| Solar wind magnetic field (BSW) | 10 nT | 5 nT | 20 nT | 5 nT | PSP data |
| Solar wind temperature (TSW) | 2.5 × 104 K | 3.0 × 104 K | 7.0 × 104 K | 5.0 × 104 K | PSP data |
| Initial s/c latitude (Carrington) | 2.0° | 3.4° | 3.8° | 3.8° | PSP ephemeris |
| Initial s/c longitude (Carrington) | 327.1° | 74.0° | 75.0° | 12.6° | PSP ephemeris |
| Initial s/c heliocentric distance | 96.8 R⊙ | 163.9 R⊙ | 96.6 R⊙ | 147.3 R⊙ | PSP ephemeris |
Notes. For a more robust explanation of each parameter, readers can refer to Kay et al. (2022a). Latitudes and longitudes are expressed in Carrington coordinates. The “Source” column indicates where the value or information was sourced from.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.