Table 1.
Magnetic connectivity between spacecraft and the Sun at 05:58 UT on 2022 January 20.
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
|---|---|---|---|---|---|---|---|---|---|
| Parker | PFSS (a) | ||||||||
| Spacecraft | r | Lon. (b) | Lat. (b) | Vobs | Lon. (b) | Lat. (b) | Lon. (b) | Lat. (b) | Polarity |
| (au) | (°) | (°) | (km s−1) | (°) | (°) | (°) | (°) | (O, M) | |
| Flare | – | 325 | 8 | – | – | – | – | – | – |
| L1 | 0.98 | 249.1 | −5.0 | 480 | 299.9 | −12.0 | 317.2 | −17.2 | (−1, −1) |
| Solar Orbiter | 0.92 | 232.2 | −1.4 | 510 | 277.4 | −8.4 | 315.6 | −16.5 | (+1, −1) |
| STEREO-A | 0.96 | 214.4 | −1.2 | 357 | 281.8 | −8.2 | 316.0 | −16.6 | (−1, −1) |
Notes. Columns 1–4 present the respective spacecraft and its location in Carrington coordinates (the first row provides the flare location). Column 5 lists the measured solar wind speed (one–hour–averaged at the SEP onset), 6–7 and 8–9 respectively provide the backmapped magnetic footpoints of the observer at 2.5 R⊙ and at the solar surface using the PFSS model. Column 10 gives the observed (O) and modelled (M) polarity.
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