Alternative definitions (2), class: vernacular (0)
Term: plage

On the Sun, an extended H-alpha emission feature of an active region that is seen from the time of emergence of the first magnetic flux until the widely scattered remnant magnetic fields merge with the background.  Magnetic fields are more intense in plage, and temperatures are higher than in surrounding, quiescent regions.

Created 2023.04.16
Last Modified 2023.04.16
Contributed by Ryan McGranaghan