Sun flares
X-ray index
Diagram of the solar flare activity
X-ray emission of the Sun on Dec 16, 2011 and Dec 17, 2011 (GOES-15)
Solar flares on Dec 17, 2011
3 solar flares were observed :
| Active region | Begin, UT | Max, UT | End, UT | |
|---|---|---|---|---|
| Flare of class C1.2 | 1381 | 23:37:00 | 23:44:00 | 23:49:00 |
| Flare of class C3.2 | 1376 | 22:47:00 | 22:55:00 | 22:58:00 |
| Flare of class C1.2 | 1376 | 04:49:00 | 05:01:00 | 05:08:00 |
Solar flares on Dec 16, 2011
No solar flares of C, M and X-class were observed