A violent eruption of plasma from the chromosphere of the Sun that is whipped up by intense magnetic activity. During the eruption, flares rise thousands of kilometers above the chromosphere, and the plasma temperatures quickly soar to 20 million degrees. Large flares release 10^25 Joules, or about the energy of a few million volcanic eruptions on the Earth. Sunspot and solar flare frequency are strongly related. In addition, flares often disturb the Earth's atmosphere electrically, thus interfering with radio transmissions. The aurora borealis and aurora australis are results of flare activity that injects energetic particles into Earth's magnetic field.
A storm or eruption of hot gases on the Sun.
A burst of energy from the sun's photosphere.
A sudden, intense brightening of a portion of the Sun's surface, often near a sunspot group; these flares, enormous eruptions of energy that leap millions of miles from the Sun's surface, pose a potential radiation hazard to humans in space
sudden eruption of hydrogen gas on the surface of the sun that releases a large amount of charged particles.
An explosive outburst of ionized gas from the sun, us ally accompanied by X-ray emission and the injection of large quantities of charged particles into the solar wind.
Extremely bright moderate to large transient emission feature lasting from a few minutes to over four hours. Flares are a rapid and violent release of energy in the chromosphere due to extreme magnetic field stress and can occasionally result in material leaving the sun in the form of a Coronal Mass Ejection (CME).
explosion on the sun's surface causing a flaming arch millions of miles long, due to a shift in the sun's magnetic field.
An eruption of hydrogen gas that occurs in an active region that causes a quick brightening and usually a magnetic disturbance
enormous explosion of gas in the solar atmosphere resulting in: a sudden acceleration of particles, the heating of plasma, and the eruption of large amounts of solar mass
Solar flares are tremendous explosions on the surface of the Sun. Energetic particles from flares can pose a hazard to astronauts and spacecraft outside the protection of Earth's magnetosphere. Solar flares are not the same as coronal mass ejections, although they often happen together.
A region of exceptionally high temperature and brightness that suddenly develops in the solar chromosphere near a sunspot; it is often associated with complex magnetic fields.
A sudden, rapid and intense variation in brightness that occurs when magnetic energy built up in the solar atmosphere is suddenly released.
a sudden temporary outburst of energy from a small area of the sun's surface -also called flare
Sudden and dramatic release of a huge burst of solar energy through a break in the Sun's chromosphere in the region of a sunspot. Effects on Earth include aurorae, magnetic storms, and radio interference.
A sudden eruption in the vicinity of a sunspot, lasting minutes to hours, caused by the release of large amounts of magnetic energy in small volume above the solar surface.
Every so often a small region of the Sun erupts in a flash of radiation and energetic particles. We call these eruptions solar flares. The main driving force behind solar flares is the energy contained in the Sun's magnetic field. Like an elastic band, magnetic field stores energy when it is twisted: on the Sun the motions of the solar surface from which the field emanates does the twisting. This stores energy in the field (or elastic band) in the form of additional tension and pressure. A solar flare occurs because the magnetic field can only store a limited amount of energy. When the energy in the field gets too large it is suddenly released into the solar atmosphere.
A burst-like emission of radiation from disturbances in the Sun's outer atmosphere.
a sudden eruption of intense high-energy radiation from the sun's surface; associated with sunspots and radio interference
a brief, intense burst of radiation that occurs on the sun's surface, usually near sunspots
a discharge of magnetic energy stored in the Corona from a Sunspot
a massive explosion on the Sun that can release as much energy as a billion megatons of TNT
an eruption of plasma from the surface of the sun
an eruption on the surface of the sun that releases radiation and particles toward the earth
an explosion in the atmosphere of the Sun, caused by the tearing and reconnection of strong magnetic fields
an explosion on the Sun that happens when energy stored in twisted magnetic fields
an explosion on the Sun that happens when energy stored within it is suddenly released
a phenomenon where the sun
a quick and powerful eruption which occur near large sunspot groups and extend from the Sun
a rapid release of energy from a localized region on the Sun, in the form of electromagnetic radiation, energetic particles, and mass motions
a short-lived sudden increase in the intensity of radiation emitted in the neighborhood of sunspots
a sudden intense brightening of a small part of the Sun's chromosphere in the vicinity of a plage or facula and often near a sunspot group
a sudden release of energy in the corona of the Sun, the phenomenon usually lasting up to several hours (in rare cases, up to more than a day)
a tremendous explosion on the sun that occurs when energy stored in a "twisted" magnetic field is suddenly released
a tremendous release of energy that occur in the neutral area between opposing magnetic fields
an explosion of cooler gases from a small area on the suns surface. Also associated with an intense outburst of radiation
a rapid outburst on the Sun, usually in the vicinity of active sunspots. A sudden brightening (only rarely seen without special filters) may be followed by the signatures of particle acceleration to high energies--x-rays, radio noise and often, a bit later, the arrival of high-energy ions from the Sun.
A brilliant outbreak in the Sun's outer atmosphere, usually associated with active groups of sunspots.
an explosion on the sun's surface which is the result of magnetic instabilities that accelerate solar material at high speeds and blasts it out into space
A sudden release of magnetic energy in the solar corona which brightens the chromosphere.
Sudden violent explosion on the Sun which occurs above complex active regions in the photosphere. They usually last only a few minutes, but their temperatures may reach hundreds of millions of degrees. Most of their radiation is emitted as X-rays, but they can also be observed in visible light and radio waves. Charged particles ejected by flares can cause aurorae when they reach the Earth a few days later.
An explosive release of electromagnetic radiation and huge quantities of charged particles from a small area of the solar surface. Solar flares are marked by a sudden brightening near a sunspot or prominence. The radiation released includes x-rays and radio waves. Solar flares and CMEs often occur together, but what connections may exist between them is a matter of debate.
A sudden brightening in some part of the Sun, followed by the emission of jets of gas and a flood of ultra-violet radiation. The gale of protons which accompanies a flare can be very dangerous to astronauts.
A sudden, short lived, burst of energy on the Sun's surface, lasting from minutes to hours.
an explosion on the surface or in the atmosphere of the sun that releases magnetic energy that accelerates electrons and protons. When these particles crash into the solar atmosphere, their kinetic energy is converted into X-rays and gamma-rays that are detected by orbiting satellites.
a sudden outburst of energy and matter from the Sun. Flares can release more energy than billions of tons of TNT (hydrogen bombs are measured in megatons: millions of tons!) in a matter of seconds or minutes.
A bright eruption of hot gas in the Sun's photosphere. Solar prominences are usually only detectable by specialized instruments but can be visible during a total solar eclipse.
A solar flare is a magnetic storm on the sun, which appears to be a very bright spot, and a gaseous surface eruption. Solar flares are classified based upon their x-ray energy output at peak burst intensity.
Bright eruption from the Sun's chromosphere.
An explosive release of energy of the Sun.
An explosive release, marked by a sudden brightening near a sunspot or prominence, of electromagnetic radiation and huge quantities of charged particles from a small area of the solar surface. See also: Ever-Changing Sun Causes Space Weather See also: The Dynamic Sun.
see " flare"
Sudden burst of electromagnetic energy and particles from a magnetic loop in an active region.
A solar flare is a violent explosion in the Sun's atmosphere with an energy equivalent to a billion megatons, traveling normally at about 1 million km per hour (about 0.1% the speed of light), though sometimes much faster. The flares have been known to affect the electro transmission of many earthly communication devices including computers, cell phones, pagers, lotus notes and automobiles. Solar flares take place in the solar corona and chromosphere, heating plasma to tens of millions of kelvins and accelerating the resulting electrons, protons and heavier ions to near the speed of light.