Sun flares
X-ray index
Diagram of the solar flare activity
X-ray emission of the Sun on Dec 20, 2011 and Dec 21, 2011 (GOES-15)
Solar flares on Dec 21, 2011
16 solar flares were observed :
| Active region | Begin, UT | Max, UT | End, UT | |
|---|---|---|---|---|
| Flare of class C2.0 | 1376 | 22:37:00 | 22:43:00 | 22:47:00 |
| Flare of class C1.5 | 1376 | 20:08:00 | 20:11:00 | 20:13:00 |
| Flare of class C1.7 | 1376 | 19:03:00 | 19:06:00 | 19:09:00 |
| Flare of class C1.9 | 1376 | 18:07:00 | 18:12:00 | 18:17:00 |
| Flare of class C2.5 | 1382 | 15:25:00 | 15:28:00 | 15:30:00 |
| Flare of class C2.0 | 1384 | 13:02:00 | 13:07:00 | 13:09:00 |
| Flare of class C1.3 | 1384 | 12:31:00 | 12:35:00 | 12:37:00 |
| Flare of class C2.1 | 1384 | 11:02:00 | 11:05:00 | 11:07:00 |
| Flare of class C2.5 | 1384 | 10:34:00 | 10:38:00 | 10:41:00 |
| Flare of class C2.2 | 1382 | 09:03:00 | 09:09:00 | 09:15:00 |
| Flare of class C3.9 | 1382 | 07:35:00 | 07:40:00 | 07:43:00 |
| Flare of class C2.0 | 1384 | 06:56:00 | 06:59:00 | 07:03:00 |
| Flare of class C3.6 | 1382 | 06:22:00 | 06:27:00 | 06:33:00 |
| Flare of class C4.3 | 1382 | 04:48:00 | 04:55:00 | 04:59:00 |
| Flare of class C3.1 | 1382 | 02:57:00 | 03:12:00 | 03:16:00 |
| Flare of class C1.5 | 1376 | 00:54:00 | 00:59:00 | 01:03:00 |
Solar flares on Dec 20, 2011
6 solar flares were observed :
| Active region | Begin, UT | Max, UT | End, UT | |
|---|---|---|---|---|
| Flare of class C6.2 | 1376 | 22:38:00 | 22:50:00 | 23:04:00 |
| Flare of class C2.3 | 0 | 21:55:00 | 22:02:00 | 22:06:00 |
| Flare of class C2.9 | 1376 | 20:04:00 | 20:36:00 | 20:57:00 |
| Flare of class C1.4 | 0 | 18:17:00 | 18:21:00 | 18:28:00 |
| Flare of class C2.1 | 1376 | 11:47:00 | 11:52:00 | 11:54:00 |
| Flare of class C1.5 | 1381 | 00:38:00 | 00:44:00 | 00:50:00 |