Table B.1.
Solar energetic electron events measured by Solar Orbiter near its first close perihelion.
| Solar event |
SEE event (based on omnidirectional data) |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Number | Date | T-III | Flare | CA | R | Imax_SolO (bg) | δ70 | δ200 | Imax_near_1au[I’corr.](bg) | s/c: CA diff. |
| onset | loc [class] | 73 to 111 keV e | SolO | SolO | 75 to 105 keV e | |||||
| (UT ± 5 min) | (deg) | (deg) | (au) | (cm2 sr s MeV)-1 | (-) | (-) | (cm2 sr s MeV)-1 | |||
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) | (11) |
| 1++ | NS2022/02/03 | 05:55 | N16W052 [B9.9] | 21 | 0.83 | 8.9×101 (5.4×101) | - | - | 5.3×101 [8.7×101] (3.0×101) | STA: +7° |
| 2++ | NS2022/02/03 | 20:40 | N16W059 [C1.4] | 28 | 0.83 | 2.4×102 (5.0×101) | -3.06±0.19 | - | 3.2×102 [4.9×102] (2.1×101) | STA: +7° |
| 3++ | NS2022/02/08 | 21:35 | S20W045 [C5.2] | 15 | 0.79 | 5.1×101 (2.9×101) | -3.60±0.50 | - | 2.5×101 [3.7×101] (1.2×101) | STA: +5° |
| 4++ | NS2022/02/10 | 02:45 | S17W056 [B9.3] | 27 | 0.78 | 4.1×101 (2.2×101) | - | 1.0×101 [1.3×101] (6.2×100) | STA: +4° | |
| 5++ | 2022/02/15 | 21:55 | N33E134a [-] | -161 | 0.72 | 2.0×103 (2.4×101) | -1.84±0.25 | -2.09±0.07 | Several events mixed | STA: +2° |
| 6++ | NS2022/03/02 | 17:45 | N16E030 [M2.0] | -57 | 0.56 | 1.0×102 (2.6×101) | - | - | 1.0×102 [9.4×101] (1.2×101) | STA: +2° |
| 7++ | NS2022/03/05 | 23:55 | S15W028 [C1.4] | -1 | 0.51 | 3.9×102 (4.3×101) | -5.26 ±0.21 | - | 2.5×101 [2.7×101] (9.5×100) | STA: +4° |
| 8++ | NS2022/03/07 | 15:00 | S50E090 [C1.1] | -121 | 0.49 | 1.0×102 (2.7×101) | -3.45±0.21 | - | 1.8×101[1.6×101](9.4×100) | STA: +6° |
| 9++ | 2022/03/10 | 19:10 | N25W020 [C2.5b] | -15 | 0.45 | 1.1×103 (3.4×101) | -2.58±0.58 | -3.89±0.77 | Several events mixed | STA: +10° |
| 10++ | 2022/03/14 | 17:20 | S25W090 [B8.5] | 47 | 0.41 | 4.1×102 (4.4×101) | -1.73±0.12 | -1.73±0.12 | Several events mixed | STA : +17° |
| 11+ | NS2022/03/18 | 22:15 | N20W041 [B2.9] | -15 | 0.36 | 2.5×102 (4.3×101) | -2.53±0.60 | - | 5.1×101 [8.8×101] (1.8×101) | STA: +30° |
| 12++ | 2022/03/21 | 05:40 | S35W146a [-] | 81 | 0.34 | 3.7×103 (2.8×101) | -1.77±0.49 | -2.96±1.22 | 5.7×102 [6.3×102] (8.5×100) | ACE& : +4° |
Columns 1 and 2: Event number and date. Column 3: Type III radio burst onset time. Column 4: Flare location in Stonyhurst coordinates and flare class based on GOES Soft X-ray (SXR) peak flux. Column 5: Longitudinal separation between the flare location and the footpoint of the magnetic field line connecting to Solar Orbiter, based on a 400 km s − 1 Parker spiral (positive connection angle (CA) denotes a flare source located at the western side of the spacecraft magnetic footpoint). Column 6: Solar Orbiter radial distance from the Sun. Column 7: 73-111 keV electron peak intensity measured by Solar Orbiter (SolO). The pre-event background level is shown in parentheses. Columns 8 and 9: Respectively, Solar Orbiter spectral indices found in the energy range around 70 keV and 200 keV, based on peak electron intensities. Column 10: 75 to 105 keV electron peak intensity measured by near 1 au spacecraft (STA: STEREO-A; STB: STEREO-B), followed in square brackets by the corrected peak intensity of a hypothetical 1 au observer with exactly the same CA as Solar Orbiter. The pre-event background level is given in parenthesis. Column 11: Name of the 1 au spacecraft and the CA difference (CAnear 1au-CASolO). * in Col. 1: Widespread SEP event: Solar Orbiter |CA| or the absolute value of the CA difference with near 1 au spacecraft is ≥80°. ++ in Col. 1: The absolute value of the difference between the CA of Solar Orbiter and near 1 au spacecraft is < 20°. + in Col. 1: The absolute value of the difference between the CA of Solar Orbiter and near 1 au spacecraft is: 20° ≤ |CA difference| ≤ 35°. NS in Col. 2: No CME-driven shock associated to the SEE event. a in Col. 4: Flare location based on longitude and latitude of the 3D CME apex (not shown). b in Col. 4: Gradual increase of the X-Ray flux, with a peak at 21:00 UT. & in Col. 10: ACE EPAM DE 53-103 keV electron intensity divided by an inter-calibration factor of 1.3.
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