3rd X-class solar flare: Major X1.3 flare erupts from Region 2673, CME produced

3rd X-class solar flare: Major X1.3 flare erupts from Region 2673, CME produced

A major solar flare measuring X1.3 at its peak time erupted from Region 2673 at 14:36 UTC on September 7, 2017. The event started at 14:20, peaked at 14:36 and ended at 14:55 UTC. This is the third X-class solar flare since X2.2 at 09:10 UTC and X9.3 at 12:02 UTC on September 6.

The event was associated with a 10cm Radio Burst lasting 7 minutes with peak flux of 1600 sfu. A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.

In addition, a CME signature first observed in SOHO/LASCO C2 imagery at 15:12 UTC and a Type II radio sweep were associated with this event.

X1.3 solar flare September 7, 2017X1.3 solar flare September 7, 2017 - 3-dayX1.3 solar flare September 7, 2017 DRAPX1.3 solar flare September 7, 2017 - AIA 131

September 7, 2017 CME produced by X1.3 solar flare

Featured image: X1.3 solar flare September 7, 2017. Credit: NASA/SDO AIA 131

Register/become a supporter

Support us AD-FREE

Your support is crucial for our survival. It makes this project fully self-sustainable and keeps us independent and focused on the content we love to create and share. 

Monthly subscription

Subscription options

Yearly subscription

Subscription options

You'll receive your ad-free account for 20x faster browsing experience, clean interface without any distractions, ability to post comments without prior editorial check, all our desktop and mobile applications (current and upcoming) ad-free and with the full set of features available, a direct line of communication and much more. See all options.


No comments yet. Why don't you post the first comment?

Post a comment

Your name: *

Your email address: *

Comment text: *

The image that appears on your comment is your Gravatar