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Prominence

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Prominences
Related Category: Astronomy: General
see chromosphere.
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Chromosphere - (kr´msfr´´) [Gr.


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Definition: prominence: A strand of relatively cool gas in the solar corona which appears bright when seen at the edge of the Sun against the blackness of space.
Space Tragedies9 Planets in Nine DaysAstronomy 101
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You can see the prominence form, rise up, and then erupt away into space over the course of one day, on October 6-7, 2012. Sometimes this material rains back down to the surface, and sometimes it escapes entirely.

A prominence is a large bright feature extending outward from the Sun's surface, often in a loop configuration. Prominences are anchored to the Sun's surface in the photosphere, and extend outwards into the Sun's corona.

A Solar Prominence
An arched prominence lifts off from the Sun, propelled by magnetic forces. This image was taken by the Skylab Space Station. It shows the Sun in ultraviolet light.
Return to the StarChild Main Page ...

A prominence is made up of relatively cold, dense plasma supported by the local magnetic field from falling back into the sun. They can survive like this for 200 days. The temperature of the plasma in a prominence is about 5000 K.

SOLAR PROMINENCE
A solar prominence (also known as a filament) is an arc of gas that erupts from the surface of the Sun. Prominences can loop hundreds of thousands of miles into space.

Prominences
Prominences are dense clouds of material suspended above the surface of the Sun by loops of magnetic field.

Prominence is a structure in the Sun's corona consisting of cool plasma supported by magnetic fields. Prominences are bright structures when seen over the solar limb, but appear dark when seen against the bright solar disk.

prominence Loop or sheet of glowing gas ejected from an active region on the solar surface, which then moves through the inner parts of the corona under the influence of the Sun's magnetic field.

prominence: Complex structures of relatively cool, dense solar material that extend into the outer chromosphere and inner corona. They are generally static and believed to be supported by magnetic forces.

prominence -- a large-scale gaseous formation above the surface of the Sun.

Prominence. A term identifying cloud-like features in the solar atmosphere. The features appear as bright structures in the corona above the solar limb and as dark filaments when seen projected against the solar disk.

Prominence, solar- a loop of cooler gas seen above the sun's surface, which sometimes erupts outwards into space
Proton- a positively charged particle that forms part of the nucleus of an atom ...

PROMINENCE - Structure that occurs above the photosphere of the Sun. Prominences may reach high into the corona, often as graceful loops that may hang suspended for many days.

prominence
A looping column of gas ejected from the surface of the Sun.
protoplanet
The initial stage of planetary formation. A protoplanet is a small clump of material that may accumulate material to become a planet.

Prominence
Eruptions of the solar surface. Visible during total solar eclipses.
Proper Motion ...

Prominence
an explosion of hot gas that erupts from the Sun's surface. Solar prominences are usually associated with sunspot activity and can cause interference with communications on Earth due to their electromagnetic effects on the atmosphere.

Prominences. A mass of glowing gas, mainly hydrogen, that rises from the surface of the Sun.
Proper motion. The movement of an individual star on the celestial sphere.

PROMINENCE
A feature of the lower part of the solar corona which when observed in the red line of hydrogen at 653nm (Ha), look like flames leaping up from the surface of the Sun.

Prominence - A region of cool gas embedded in the corona. Prominences are bright when seen above the Sun's limb, but appear as dark filaments when seen against the Sun's disk ...

Prominence A cloud of cooler plasma extending high above the Sun"s visible surface, rising above the photosphere into the corona.

Prominence
A region of cool (104 K), high-density gas embedded in the hot (106 K), low-density Solar corona. Prominences are the flamelike tongues of gas that appear above the limb of the Sun.
Propagator ...

Rise to prominence
Alcibiades first rose to prominence when he began advocating aggressive Athenian action after the signing of the Peace of Nicias
Peace of Nicias ...

Prominence
An eruption of gas from the chromosphere of a star. Solar prominences are visible as part of the corona during a total solar eclipse.

Prominence:
Cloud of gas elevated above the solar surface.
Proper motion:
The apparent drift of a star across the sky, compounded from the motion of the star and the sun.

prominence - (n.)
Solar gas protruding over the limb, visible to the naked eye only at eclipses but also observed outside of eclipses by its emission line spectrum. Prominences are at approximately the same temperature as the chromosphere.

A prominence beginning to erupt on the Sun's limb, caused by a cascade of rippling Alfven waves sparked by small-scale flares. Image: NASA/SDO/AIA.

A prominence seen in projection on the Solar disk. [H76]
Filar Micrometer
An instrument used with a telescope for visually measuring small angular separations (as between binary stars). [H76]
Fine Structure ...

Sun Prominence
This image was acquired from NASA's Skylab space station on December 19, 1973. It shows one of the most spectacular solar flares ever recorded, propelled by magnetic forces, lifting off from the Sun.

A solar prominence as seen by SOHO. Image credit: Solar and Heliospheric Observatory (SOHO). SOHO is a project of international cooperation between ESA and NASA.

Finally, solar prominences rise up through the chromosphere from the photosphere, sometimes reaching altitudes of 150,000 kilometers. These gigantic plumes of gas are the most spectacular of solar phenomena, aside from the less frequent solar flares.

prominence A filamentlike protuberance from the chromosphere of the sun. See flocculi. Compare flare.

ACTIVE PROMINENCE A PROMINENCE displaying material motion and changes in appearance over a few minutes of time. ACTIVE REGION (AR) A localized, transient volume of the solar atmosphere in which PLAGEs, SUNSPOTS, FACULAe, FLAREs, etc.

solar prominence (NASA Thesaurus) Filamentlike protuberances from the chromosphere of the sun. Used for filaments (solar physics). solar prominence (NASA SP-7, 1965) = prominence.

prism prominence proper motion angular change of a star's direction from the Sun in one year. protein large molecule composed of hundreds to thousands of amino acids joined together by peptide links making up the DNA molecule.

A rather twisted prominence. Both images courtesy of SOHO/EIT consortium. SOHO is a project of international cooperation between ESA and NASA.

If I can see solar prominences with the naked eye during a total eclipse, why do I need a hydrogen-alpha filter to see them at other times?

The corona is not visible and neither are the prominence because of the glare from the photosphere.
Anorthosite
Rock of aluminum and calcium silicates found in the lunar highlands.
Aphelion ...

An ACTIVE PROMINENCE seen on the DISK. ACTIVE LONGITUDE. The approximate center of a range of heliographic longitudes in which ACTIVE REGIONS are more numerous and more FLARE-active than the average. ACTIVE PROMINENCE.

structure filament a strand of cool gas suspended over the photosphere by magnetic fields, which appears dark as seen against the disk of the Sun; a filament on the limb of the Sun seen in emission against the dark sky is called a prominence.

" So great is its prominence that it has two "announcer stars" that from the mid- northern hemisphere rise before it, Procyon and Mirzam.

(A magnetic polarity flip between northern and southern sunspots means one complete cycle is actually 22 years.) Part of this activity is the enhanced prominence of sunspots: dark cool regions on the Sun that are a mere 3,000 C, ...

Solar flares are eruptions more powerful than surge prominences (a flare is shown in the Sun + planets montage above). They will last only a few minutes to a few hours. A lot of ionized material is ejected in a flare.

Solar Heliospheric Observatory Image Showing Prominences
Solar Flares
Solar flares are explosive events on the solar surface characterized by intense brightening of regions of the solar atmosphere in x-rays, ...

Introduction to the Sun Solar Structure Size, Mass Flares, Solar Wind, Prominences Sun's Birth Solar Eclipses Activities,
Web Links Solar Rotation Sunspots Sun's Death
Structure of the Sun ...

He initiated in 1866 the spectroscopic observation of sunspots, and in 1868 he found that solar prominences are upheavals in a layer around the Sun, which he named the chromosphere.

For example, SOHO is a satellite that is run jointly by ESA and NASA, and it does take images of giant flares and prominences, which are like giant explosions on the sun.

The Sun's faint corona will be visible, and even the chromosphere, solar prominences, and possibly even a solar flare may be visible.

I'm talking about the solar flares/prominences. You could see them using telescope with an Hα filter.

Sir Patrick Moore CBE was an English astronomer who attained prominence as a writer, researcher, and presenter of ‘The Sky At Night,' the world's longest-running television series with the same original presenter.

ACTIVE PERIOD - Lots of solar activity including sunspots, flares, prominences, and coronal mass ejections. Our Sun was most recently active during the late 1980's and early 1990's.
Photograph September 28, 1991
by Yohkoh Satellite ...

Southern Cross
A small but very distinctive . The Southern Cross inspired many ancient cultures because of it prominence in the night sky. The VLT third Unit Telescope is named after the Southern Cross in the Mapuche language, "Melipal".

M17 - Very bright nebula, elongated shape. The northern part is almost straight, in the south I can see a small prominence.
M8 - Diffuse light surrounding a grouping of stars. Easily seen with averted vision.

Two months later, Norman Lockyer used a cleaver technique and managed to observe the Solar prominence without waiting for an eclipse.

A loop of hot gas blasts off the surface of the Sun in one of the first images from Solar Dynamics Observatory, NASA's latest Sun-watching satellite. Known as a solar prominence, the loop is bigger than Earth.

Sol is the star that the planets & comets in our solar system orbit around. The Sun is spectacular when viewed using a solar filter or dedicated solar scope for sunspots & prominences.
Mercury Stats
Mass (kg)
1.989e+30 ...

Prominences, flares, coronal mass ejections
Helioseismology : observations and internal structure
The sun's energy source
Inadequacy of chemical or gravitational energy sources
Binding energy curve for all elements : ...

See also: List of astronomers There is also a well-known painting by Johannes Vermeer titled The Astronomer, which is often linked to Vermeer's The Geographer. These paintings are both thought to represent the growing influence and rise in prominence ...

"Well, with my little refractor, the blackness of the maria, the brilliant white of the mountains, and the peppering of tiny craters down to the limit of visibility make it a feast for the senses that is very satisfying! Solar prominences, faculae, ...

With a good white-light solar filter, you can track sunspots, faculae, and granulation. If you can afford a scope with a hydrogen-alpha filter, you'll see the fiery orange photosphere and immense prominences flying off the edge of the solar disk.

By combining the information obtained from the three images astronomers can study many aspects of the sun, the sunspots, the solar flares and prominences and all the other kinds of activities on the surface of the sun.

The Coalsack earned the nickname Black Magellanic Cloud in the 16th century, apparently rivalling the prominence of the Large and Small Magellanic Clouds, the two dwarf irregular galaxies that shine brightly in the skies of the Southern Hemisphere.

end and focus the light at the eyepiece at the other end. Refractors were almost extinct at one point, but modern glass elements (including an exciting new artificially grown crystal known as fluorite) have brought the refractor back to prominence.

At this point the sky is sufficiently dark that planets and brighter stars are visible, and if the Sun is active one can typically see solar prominences and flares around the limb of the Moon, even without a telescope (see image at left).

Examples include prominences, which are great arcs of gas that extend outwards from the Sun, and solar flares which are great explosions and jets of gas from the solar surface.

See also: See also: Earth, Sun, Astro, Solar, Period

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