Yesterday, Spaceweather said:
“WHITE SUNSPOT: This weekend, observers of the sun have been waiting for something to emerge over the sun’s eastern limb. We knew it was there because of a farside solar flare on July 6th. Today it arrived, and it appears to be a white sunspot.
The correct name of this phenomenon is “faculae.” It is a cousin of sunspots.
Regular dark sunspots are magnetic islands on the surface of the sun. Magnetic fields in these areas are thousands of times stronger than Earth’s magnetic field. Sunspot magnetic fields are so strong, they block the flow of heat from the nuclear furnace below. They appear dark because they are relatively cool compared to their surroundings.
Faculae are also made of magnetic fields. However, the magnetism of faculae is concentrated in much smaller bundles than in sunspots. Instead of blocking heat from below, they essentially form corridors that allow us to see into sun’s hot interior, creating an apparent bright spot on the surface of the sun.
It is still possible that a dark core will follow these faculae over the limb in the hours ahead, establishing the region as a normal sunspot group. Stay tuned.”
This is what it looked like this morning.
Nice prominences and “filaprom” too.
For some reason, I reckon this one looks better in colour.