X-ray index
Diagram of the solar flare activity
X-ray emission of the Sun on Sep 27, 2013 and Sep 28, 2013 (GOES-15)
Solar flares on Sep 28, 2013
No solar flares of C, M and X-class were observed
Solar flares on Sep 27, 2013
No solar flares of C, M and X-class were observed