Facula (pl. faculae) is a bright spot on the surface of a planet or a star. It may refer to.

2025年1月14日 · Faculae are bright areas that are usually most easily seen near the limb, or edge, of the solar disk. These are also magnetic areas but the magnetic field is concentrated in much smaller bundles than in sunspots. While the sunspots tend to make the Sun look darker, the faculae make it look brighter.

Facula, in astronomy, bright granular structure on the Sun’s surface that is slightly hotter or cooler than the surrounding photosphere. A sunspot always has an associated facula, though faculae may exist apart from such spots. Faculae are visible in ordinary white light near the Sun’s limb.

Solar faculae are bright spots in the photosphere that form in the canyons between solar granules, short-lived convection cells several thousand kilometers across that constantly form and dissipate over timescales of several minutes. Faculae are produced by …

2022年1月18日 · Faculae are extended regions that tend to form around sunspots and are hotter, and brighter, than the photosphere. Faculae are barely visible in solar imagery taken in visible light, but are more obvious in specific wavelengths (such as 1700 Angstroms used here) as the brighter speckled regions around many of the sunspots.

2018年9月7日 · Bright surface features on the dwarf planet Ceres known as faculae were first discovered by NASA’s Dawn spacecraft in 2015. This mosaic of one such feature, Cerealia Facula, combines images obtained from altitudes as …

The meaning of FACULA is any of the bright regions of the sun's photosphere seen most easily near the sun's edge.

2000年7月20日 · Faculae have fields of 500 to 1000 Gauss and are relatively bright. Thus, dark sunspots transform to bright faculae that outlive the spots themselves. In this way, over time, sunspots enhance solar luminosity by approximately 0.1%.

2018年11月15日 · Solar faculae represent, second after sunspots, significant and prominent manifestation of solar activity. Despite the fact that facula is marginally luminous in comparison to the quiet photosphere, nevertheless the contribution of faculae as a whole cannot be ignored.

Faculae are bright, irregular patches on the surface of the Sun that appear brighter than the surrounding photosphere. They are associated with regions of intense magnetic activity and are often found near sunspots.