Table 1.
Observations and associated individual events before and during the M3.9-class flare.
| Approx. time (UT) | Observations | Event description | Notes |
|---|---|---|---|
| From 1 April | PHI/HRT, HMI, Hinode/SP | Flux emergence in between AR 12975 and 12976 | Fig. 7 |
| From 1 April | AIA | Filament slow rise | Figs. 7,10 |
| 2 April | |||
| 03:39–11:53 | EIS | Non-thermal velocities seen near | Fig. 8 |
| the filament northern root part | |||
| 09:24–10:39 | EUI/HRI, SPICE | Overlying arcade above filament apparent motion | Fig. 9 |
| 11:32 | IRIS | Northern part of the filament seen in IRIS/Mg II | Fig. 5a |
| 12:50 | GOES, STIX | Start of the flare | Figs. 3, 6 |
| 13:10 | AIA | Filament fast rise | Figs. 4a, 10 |
| 13:00–14:00 | EUI/FSI 304 Å, SPICE, STIX | Flare ribbons, HXR sources, strong Doppler shifts | Figs. 4e,11,12,13 |
| 13:05–17:08 | EIS | Sit and stare observations | Figs. 14, 15, 16, 17, 18 |
| 13:56 | GOES, STIX | Peak of the flare | Figs. 3, 6 |
| 14:12 | SOHO/LASCO | Coronal mass ejection | Fig. 4c |
| ≈4:50 | AIA, EUI/FSI 174 Å, SPICE | Flare loops | Figs. 4b, f,11,12 |
| 15:39 | IRIS | Part of the northern filament leg still seen in Mg II | Fig. 5b |
Notes. All timings are given at Earth time.
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