Double far side eruption

Wednesday, 18 October 2017 13:21 UTC

Double far side eruption

Two non earth-directed coronal mass ejections are now visible in the latest SOHO/LASCO coronagraph imagery.

The coronal mass ejections come from a complex far side event. We are trying to conclude what exactly caused these eruptions but the imagery coming from STEREO Ahead EUVI isn't complete right now. This makes it hard to tell if these solar plasma clouds come from a filament eruption or a solar flare. A filament eruption does seem the most likely culprit at the time of writing.

A large-scale coronal propagating front (LCPF) which is basically a shock wave traveling trough the solar corona, rounded the east limb as seen from earth's point of view and caused the detection of a Type II radio emission and a Type IV radio emission. These were reported by the NOAA SWPC today at 06:10 UTC.

The coronal mass ejections are of course not directed towards earth.

Any mentioned solar flare in this article has a scaling factor applied by the Space Weather Prediction Center (SWPC), the reported solar flares are 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.

Thank you for reading this article! Did you have any trouble with the technical terms used in this article? Our help section is the place to be where you can find in-depth articles, a FAQ and a list with common abbreviations. Still puzzled? Just post on our forum where we will help you the best we can! Never want to miss out on a space weather event or one of our news articles again? Subscribe to our mailing list, follow us on Twitter and Facebook and download the SpaceWeatherLive app for Android and iOS!

Latest news

Support SpaceWeatherLive.com!

A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!

23%
Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare2024/03/28X1.1
Last M-flare2024/03/29M3.2
Last geomagnetic storm2024/03/25Kp5 (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
February 2024124.7 +1.7

This day in history*

Solar flares
12001X2.45
22014X1.45
32023X1.2
42024M3.2
52001M3.13
ApG
1199928G2
2200337G1
3201328G1
4200122G1
5199820G1
*since 1994

Social networks