A region; country.
Patchy brightenings on the solar disk seen in H-Alpha light, usually found in or near active regions, which can last for several days. Plage is irregular in shape and variable in brightness, marking areas of nearly vertical emerging or reconnecting magnetic field lines (from French word for "beach" with the "a" being a short one).
bright, disturbed area of the solar surface.
An extended bright area of an active region that exists from the emergence of the first magnetic flux until the widely scattered remnant magnetic fields merge with the background. ( go to first use in the text)
The part of a solar active region that appears bright when viewed in H0.
A bright region near a sunspot, as observed in a chromospheric image, or spectroheliogram. If the region is visible on photospheric images (usually only possible near the limb of the Sun), it is called a facula.
Bright areas in the chromosphere overlying sunspots. The source of EUV radiation.
the beach at a seaside resort
Bright areas seen near sunspots in the chromosphere. Seen in H-alpha light. From the French for beach.
An extended emission feature of an active region that exists from the emergence of the first magnetic flux until the widely scattered remnant magnetic fields merge with the background. This bright feature is found in the vicinity of virtually all active sunspot groups and occurs on a larger scale and are brighter than facula. Plage is French for "beach," because each plage looks like light-colored sand against the darker structures around them.
Bright regions in the Sun's chromosphere.
A bright region of the solar surface observed in the monochromatic light of some spectral line.
Bright regions of gases heated by concentrated magnetic fields in the solar chromosphere during the sun’s active periods. They appear near groups of sunspots just before the sunspots emerge. (TOP OF THE PAGE) (CLOSE WINDOW)
Bright regions of gases with concentrated magnetic fields in the solar chromosphere. They appear near groups of sunspots and in the regions surrounding sunspots that are about to emerge.
Bright regions seen in the solar chromosphere.
Areas of intensified brightness in the solar chromosphere that are usually observed in an emission line of calcium. These regions are usually broad and irregular and approximately coincide with faculae and sunspots in the underlying photosphere. The number and size of these regions varies during the solar cycle, causing enhanced chromospheric emission during solar maximum relative to a lower emission during solar minimum.