2025-12-15 23:19:32
Dual Origins of Rapid Flare Ribbon Downflows in an X9-class #SolarFlare: https://iopscience.iop.org/article/10.3847/1538-4357/ae21b5 -> long explainer thread: https://x.com/RyanJFrench/status/2000677115306348720
Dual Origins of Rapid Flare Ribbon Downflows in an X9-class #SolarFlare: https://iopscience.iop.org/article/10.3847/1538-4357/ae21b5 -> long explainer thread: https://x.com/RyanJFrench/status/2000677115306348720
The #sunspot show goes on: now activity region (1)4274 - which caused a major geostorm last month - has returned onto the disk with the new number (1)4299. And immediately fired off an X1.9 #SolarFlare today: see #SDO HMI image - https://jsoc1.stanford.edu/data/hmi/images/latest/HMI_latest_Int_4096x4096.gif - of 18:11 UTC, i.e. exactly an hour ago.