Supergranulation is a particular pattern on the Sun surface. It was discovered in the 1950s by A.B.Hart on Doppler velocity measurements showing horizontal flows on the photosphere (flow speed about 300 to 500 m/s).
Granulation Granules are related to the convective zone. The granulation that shows up in the photosphere is a result of the rising and falling of hot gas that takes place in the convective zone.
granulation Mottled appearance of the solar surface, caused by rising (hot) and falling (cool) material in convective cells just below the photosphere.
Granulation. Cellular structure of the solar photosphere visible at high spatial resolution.
Granulation- a pattern of small cells seen on the surface of the Sun caused by the convective motions of the hot solar gas
Gravitational lens- distortion of an image - or the production of many images - by a powerful gravitational field ...
Granulation The "grains of rice" appearance of the Sun's surface, which results from convection cells within the Sun.
Graticule A system of parallel lines or crossed lines at the telescope's focal plane, used in micrometers.
Granulation
The fine structure visible on the solar surface caused by rising currents of hot gas and sinking currents of cool gas below the surface.
Grating ...
Granulation
a pattern of small cells that can be seen on the surface of the Sun. They are caused by the convective motions of the hot gases inside the Sun.
Granulation
The mottled appearance of the solar photosphere, caused by gases rising from the interior of the Sun (see granules).
Granules ...
Supergranulation - The pattern of very large (15,000 to 30,000 km in diameter) convective cells in the Sun's photosphere
Superior Planet - A planet whose orbit lies outside the Earth's orbit ...
GRANULATION:
Granulation is solar granules together with intergranular lanes (dark, cool areas between granules where solar material is descending into the surface). Granulation covers the visible surface (the photosphere) of the Sun.
GRANULATION
Granulation consists of solar together with (dark, cool areas between granules where solar material is descending into the surface). Granulation covers the visible surface (the ) of the .
supergranulation - (n.)
The pattern of large cells seen in the sun's chromosphere, when viewed in the light of the strong emission line of ionized hydrogen.
superior planet - (n.) ...
Sunspots + granulation in the photosphere (courtesy of Peter N. Brandt). There are also movies of the granulation available at his web site.
An extremely luminous star of large diameter and low density. No supergiants are near enough to establish a trigonometric parallax. [H76]
Supergranulation Cells ...
Thunderheads and granulation are large-scale examples of convection. Fortunately, there are examples of convection that fit into a classroom. An excellent example can be seen in hot Japanese Miso (soybean paste) soup.
GRANULATION. Cellular structure of the PHOTOSPHERE visible at high spatial resolution. GREEN LINE. The green line is one of the strongest (and first-recognized) visible coronal lines.
Besides granulations the sun's disk shows, as a rule, one or more spots or groups of spots.
The thermal columns in the convection zone form an imprint on the surface of the Sun, in the form of the solar granulation and supergranulation.
Its image reveals two dominant features, a darkening toward the outermost regions, called limb darkening, and a fine rice-grain-like structure called granulation.
This pattern, known as the solar granulation, is caused by turbulence in the upper levels of the convection zone. Each granule is about 2000 km (about 1240 mi) across.
Granulation : results from sub-surface convection
Chromosphere : low density, pink, hotter, He discovery
Corona : large, very low density, very hot
Solar wind : aurora, comet tails pushed back
Solar activity, sunspots, magnetic fields, cooler ...
The surface of the Sun has a mottled appearance called "granulation." This represents the upper end of the convection cells that are in the outer layers of the Sun.
Both types of waves can be launched by the turbulence of granulation and supergranulation at the solar photosphere, ...
This gives rise to the feature called granulation. Through telescopes, granulation looks like some bright regions surrounded by dark boundaries. Each granule is about 1/10 the size of the Earth and will last for about 20 minutes.
Deep cells, 30,000 km across are responsible for supergranulation. The cells just below the photosphere are only 1,000 km across and are responsible for the granulation seen on the surface of the Sun as in the image below.
Associated movies:
SVST_granulation.mpg [0.5 Mb]
Cattaneo_corks.mpg [6 Mb]
DopplerFeatures128New.avi [21 Mb]
giant_cells.mpg [9 Mb]
Hathaway_Movie2002.avi [86 Mb] ...
What can be learned from granulation?
What are the characteristics of sunspots and how do they change over time?
What causes sunspots?
What are the various outbursts from the Sun's surface and what do those outbursts lead to?
Bray, R. J.; Loughhead, R. E.; and Durrant, C. J. The Solar Granulation, 2nd ed. Cambridge, England: Cambridge University Press, 1984.
The filter selectively transmits a particular wavelength (colour) of light that highlights prominent solar features such as sunspots, prominences and granulation.
Lysis refers to the death of a cell by breaking of the cellular membrane, often by viral or osmotic mechanisms that compromise its integrity. A solution containing the contents of lysed cells is called a "lysate"....
, and degranulation ...
the change in temperature with increasing radius is so rapid (0.1-5 x 105 K) that the interior becomes unstable and undergoes convection (rapid up and down motion of large packets of gas). Convective movement is responsible for the granulation ...
 See also: Sun, Light, Solar, Field, Temperature
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