SEP-C25-0010
July 15, 2021
Science case
Widespread event
Widespread event
Flare date/time [UTC]
2021-07-15 21:06:14
2021-07-15 21:06:14
Flare class (GOES)
M4.6
M4.6
Flare Carrington latitude
-18°
-18°
Flare Carrington longitude
46°
46°
Flare comments
Flare is behind the limb as seen from Earth, flare location determined using SOLO/STIX
Flare is behind the limb as seen from Earth, flare location determined using SOLO/STIX
Radio type II bursts
SOLO, PSP, STEREO-A, Wind
SOLO, PSP, STEREO-A, Wind
Decametric type II burst
Start time [UT]
21:18
End time [UT]
00:07
Frequency range
20-0.57 MHz
Metric type II burst
Start time [UT]
—
End time [UT]
—
Frequency range
—
Imaging available
No
Radio comments
—
—
| L1 (SOHO/Wind) | Parker Solar Probe | STEREO A | Solar Orbiter | |
|---|---|---|---|---|
| Radial distance [au] | 1.01 | 0.64 | 0.96 | 0.86 |
| Carrington latitude [deg] | 4 | 4 | -1 | -2 |
| Carrington longitude [deg] | 214 | 262 | 168 | 115 |
| e- (~1 MeV) / p (25-40 MeV) ratio | 6.02e+01 | 3.53e+02 |
—
|
2.43e+02 |
| p 25 MeV | ||||
| Onset date [UTC] |
—
|
2021-07-16 |
—
|
2021-07-16 |
| Onset time [UTC] |
—
|
01:22:00 |
—
|
00:35:00 |
| Averaging used for onset [min] |
—
|
15 |
—
|
10 |
| Sector used for onset |
—
|
B |
—
|
sun |
| Peak date [UTC] | 2021-07-16 | 2021-07-16 |
—
|
2021-07-16 |
| Peak time [UTC] | 19:55:00 | >=08:15:00 |
—
|
10:05:00 |
| Peak flux [cm-2s-1sr-1MeV-1] | 3.72e-03 | >=1.62e-02 | 8.87e-04 | 3.12e-02 |
| Averaging used for peak [min] | 10 | 15 |
—
|
10 |
| Sector used for peak |
—
|
B |
—
|
sun |
| Inferred injection date [UTC] |
—
|
2021-07-16 |
—
|
2021-07-16 |
| Inferred injection time [UTC] |
—
|
01:01:00 |
—
|
00:03:00 |
| Spiral length used for inferred injection time [au] |
—
|
0.65 |
—
|
0.97 |
| Solar wind speed [km/s] |
—
|
621 |
—
|
381 |
| Comments | No onset due to data gap | Data gaps during event. PSP not in nominal orientation | No event | |
| e- 100 keV | ||||
| Onset date [UTC] | 2021-07-16 | 2021-07-16 |
—
|
2021-07-15 |
| Onset time [UTC] | <=02:30:30 | 02:30:00 |
—
|
<=23:15:00 |
| Averaging used for onset [min] | 60 | 60 |
—
|
90 |
| Sector used for onset | 7 | 3 (sun) |
—
|
sun |
| Peak date [UTC] | 2021-07-16 | 2021-07-16 |
—
|
2021-07-16 |
| Peak time [UTC] | 10:30:30 | >=10:30:00 |
—
|
09:45:00 |
| Peak flux [cm-2s-1sr-1MeV-1] | 3.03e+02 | >=9.83e+02 | 9.44e+00 | 5.15e+02 |
| Averaging used for peak [min] | 60 | 60 |
—
|
90 |
| Sector used for peak | 7 | 7 (asun) | sun | sun |
| Inferred injection date [UTC] | 2021-07-16 | 2021-07-16 |
—
|
2021-07-15 |
| Inferred injection time [UTC] | 02:14:00 | 02:20:00 |
—
|
23:01:00 |
| Spiral length used for inferred injection time [au] | 1.12 | 0.65 |
—
|
0.97 |
| Solar wind speed [km/s] | 474 | 599 |
—
|
386 |
| Comments | Peak possibly associated to additional injection | Onset determined by eye. PSP not in nominal orientation | No event | Peak could be affected by ion contamination |
| e- 1 MeV | ||||
| Onset date [UTC] |
—
|
2021-07-15 |
—
|
2021-07-15 |
| Onset time [UTC] |
—
|
22:15:00 |
—
|
<=23:15:00 |
| Averaging used for onset [min] |
—
|
30 |
—
|
30 |
| Sector used for onset |
—
|
B |
—
|
sun |
| Peak date [UTC] | 2021-07-16 | 2021-07-16 |
—
|
2021-07-16 |
| Peak time [UTC] | 17:15:00 | 08:15:00 |
—
|
08:45:00 |
| Peak flux [cm-2s-1sr-1MeV-1] | 2.24e-01 | 5.70e+00 | 2.49e-02 | 1.72e+00 |
| Averaging used for peak [min] | 30 | 30 |
—
|
30 |
| Sector used for peak |
—
|
B |
—
|
sun |
| Inferred injection date [UTC] |
—
|
2021-07-15 |
—
|
2021-07-15 |
| Inferred injection time [UTC] |
—
|
22:09:00 |
—
|
23:06:00 |
| Spiral length used for inferred injection time [au] |
—
|
0.65 |
—
|
0.97 |
| Solar wind speed [km/s] |
—
|
623 |
—
|
386 |
| Comments | No onset due to data gap | PSP not in nominal orientation | No event | Gradual rise. Onset ambiguous, could be already around 22:00 on the 15th |