Solar & space-weather phenomenon · Solar source
Coronal Holes
Regions of the Sun's corona where the magnetic field opens out into space rather than looping back, appearing dark in X-ray and ultraviolet images. They are the source of the fast solar wind, and the high-speed streams they send out drive recurring geomagnetic activity.
Drivers, environments & assets
Knowledge connections
- Associated withThe Sun
- Associated withSolar Wind
- Associated withParker Solar Probe
- Associated withThe Solar Corona
- Associated withPolar Coronal Plume
- Associated withThe Fast Solar Wind
Sources
The primary and reference sources this topic draws on.
- NOAA SWPCNOAA Space Weather Prediction Center
Space-weather forecasts and alerts: aurora (OVATION), the Kp index, and the G1–G5 geomagnetic storm scale.