SEP-C25-0044
May 9, 2023
Science case
3-spacecraft narrow-spread event
3-spacecraft narrow-spread event
Flare date/time [UTC]
2023-05-09 18:20:00
2023-05-09 18:20:00
Flare class (GOES)
M4.2
M4.2
Flare Carrington latitude
15°
15°
Flare Carrington longitude
138°
138°
Flare comments
Another M5.0 flare at 21:13 might have contributed to the peak flux
Another M5.0 flare at 21:13 might have contributed to the peak flux
Radio type II bursts
PSP, STEREO-A, Wind, GB
PSP, STEREO-A, Wind, GB
Decametric type II burst
Start time [UT]
18:47
End time [UT]
21:01
Frequency range
20-0.725 MHz
Metric type II burst
Start time [UT]
18:40
End time [UT]
19:01
Frequency range
25-124 MHz
Imaging available
No
Radio comments
RSTN. SOLO data unavailable
RSTN. SOLO data unavailable
| BepiColombo | L1 (SOHO/Wind) | Parker Solar Probe | STEREO A | Solar Orbiter | |
|---|---|---|---|---|---|
| Radial distance [au] | 0.61 | 1 | 0.76 | 0.96 | 0.62 |
| Carrington latitude [deg] | -3 | -3 | 4 | -4 | 8 |
| Carrington longitude [deg] | 140 | 107 | 207 | 98 | 265 |
| e- (~1 MeV) / p (25-40 MeV) ratio | 1.66e+02 |
—
|
—
|
1.92e+01 | 6.19e+03 |
| p 25 MeV | |||||
| Onset date [UTC] | 2023-05-09 | 2023-05-09 |
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|
2023-05-09 |
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|
| Onset time [UTC] | ~19:15:00 | >=19:30:00 |
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|
19:58:09 |
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|
| Averaging used for onset [min] | 30 | 10 |
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|
5 |
—
|
| Sector used for onset | 0 |
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—
|
—
|
—
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| Peak date [UTC] | 2023-05-09 | 2023-05-10 |
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|
2023-05-10 |
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|
| Peak time [UTC] | 21:45:00 | 00:36:21 |
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|
02:15:39 |
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|
| Peak flux [cm-2s-1sr-1MeV-1] | 1.73e+00 | 2.82e-01 | 8.67e-04 | 1.76e-01 | 8.14e-05 |
| Averaging used for peak [min] | 30 | 10 | 100 | 10 | 60 |
| Sector used for peak | 0 |
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|
A |
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|
sun |
| Inferred injection date [UTC] | 2023-05-09 | 2023-05-09 |
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|
2023-05-09 |
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|
| Inferred injection time [UTC] | 18:55:00 | 18:52:00 |
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|
19:25:00 |
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|
| Spiral length used for inferred injection time [au] | 0.64 | 1.16 |
—
|
1.03 |
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|
| Solar wind speed [km/s] |
—
|
405 |
—
|
596 |
—
|
| Comments | Onset determined by eye | Onset during data gap and decay of previous event. Lower limit provided. Event potentially associated with later flare | No event | Onset occurs during decay of previous event. Real onset could be earlier | No event |
| e- 100 keV | |||||
| Onset date [UTC] | 2023-05-09 | 2023-05-09 |
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—
|
—
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| Onset time [UTC] | 18:55:00 | <=19:35:00 |
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—
|
—
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| Averaging used for onset [min] | 10 | 50 |
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|
—
|
—
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| Sector used for onset | 0 | 0 |
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—
|
—
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| Peak date [UTC] | 2023-05-09 | 2023-05-09 |
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—
|
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| Peak time [UTC] | <=21:35:00 | 22:05:00 |
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—
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| Peak flux [cm-2s-1sr-1MeV-1] | 1.08e+05 | 3.11e+04 |
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|
—
|
2.52e+02 |
| Averaging used for peak [min] | 10 | 50 |
—
|
—
|
30 |
| Sector used for peak | 1 | 0 |
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|
—
|
sun |
| Inferred injection date [UTC] | 2023-05-09 | 2023-05-09 |
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|
—
|
—
|
| Inferred injection time [UTC] | 18:45:00 | 19:17:00 |
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|
—
|
—
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| Spiral length used for inferred injection time [au] | 0.64 | 1.17 |
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|
—
|
—
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| Solar wind speed [km/s] |
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|
383 |
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|
—
|
—
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| Comments | No event | Period of potential ion contamination | No event | ||
| e- 1 MeV | |||||
| Onset date [UTC] | 2023-05-09 | 2023-05-09 |
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|
2023-05-09 |
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| Onset time [UTC] | 18:52:00 | ~21:50:00 |
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|
19:15:00 |
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|
| Averaging used for onset [min] | 5 | 10 |
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|
10 |
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| Sector used for onset | 0 |
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—
|
—
|
—
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| Peak date [UTC] | 2023-05-09 | 2023-05-10 |
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|
2023-05-09 |
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|
| Peak time [UTC] | 21:45:00 | 00:36:00 |
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|
22:55:00 |
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| Peak flux [cm-2s-1sr-1MeV-1] | 7.37e+01 | 4.59e+00 |
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|
1.99e+00 | 4.00e-01 |
| Averaging used for peak [min] | 10 | 10 |
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|
10 | 60 |
| Sector used for peak | 2 |
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—
|
—
|
north |
| Inferred injection date [UTC] | 2023-05-09 | 2023-05-09 |
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|
2023-05-09 |
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|
| Inferred injection time [UTC] | 18:46:00 | 21:41:00 |
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|
19:06:00 |
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| Spiral length used for inferred injection time [au] | 0.64 | 1.08 |
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|
1.03 |
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|
| Solar wind speed [km/s] |
—
|
582 |
—
|
596 |
—
|
| Comments | Onset during data gap. Onset determined by eye to first data after gap. Event potentially associated to later flare | No event | No event | ||