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  • noun

Words related to facula

a bright spot on a planet

a large bright spot on the sun's photosphere occurring most frequently in the vicinity of sunspots

References in periodicals archive ?
In visible light, faculae are difficult to observe at the center of the solar disk, but often become quite apparent towards the limb.
Often surrounding a sunspot region are faculae, irregular bright patches just above the surface that are still not fully understood.
Changes to the disk-integrated solar irradiance at any time are thus the net of the competing emission enhancements in all bright faculae (and plage) and emission reduction in all dark sunspots.
5, strong fields can be observed in faculae and magnetic bright points, while weak fields are present above the granules ([section]2.
AR1520 S16[degrees]/086[degrees] was seen close to the SE limb on July 7 after 'huge' amounts of faculae were reported at that location on the previous day.
Low to medium magnification in any telescope will reveal complex sunspots arranged in groups, light-colored faculae near the Sun's dusky limb, and subtle granulation carpeting the solar disk.
During times when magnetic disturbances grow stranger, at the peak of the solar cycle, dark sunspots and bright regions called faculae show up on the sun's surface.
Dubbed faculae by Dawn principal investigator Christopher Russell (University of California, Los Angeles), after the bright spots that appear in the Sun's photosphere, they might be exposures of ice or salt.
To view faculae and granulation safely through a telescope, you will need a Alter that will dim the Sun's light by a factor of about a million.
On Apr 1 a long forked east-west filament was over the NE limb accompanied by white light faculae and H-alpha plage, including a bright red spot.
These spots are surrounded by bright plages, emission regions that coincide with (and closely resemble) the bright photospheric faculae usually seen foreshortened near the solar limb in white light.
For the next step a specialised H-alpha telescope (one which shows the Sun in hydrogen alpha light, 656 nanometres) is an exciting development, and in addition to sunspots, prominences, flares and faculae can also be seen.
Regions of intense brightening known as faculae surround sunspots.
AR1087 N19[degrees]/334[degrees] appeared on the eastern limb on July 9 type Axx which rapidly developed to type Dso by July 10, surrounded by a large area of faculae.
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