Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Solar_flare> ?p ?o }
- Solar_flare abstract "A solar flare is a sudden flash of brightness observed near the Sun's surface.It involves a very broad spectrum of emissions, requiring an energy release of up to 6 × 1025 joules of energy (roughly the equivalent of 160,000,000,000 megatons of TNT, over 25,000 times more energy than released from the impact of Comet Shoemaker–Levy 9 with Jupiter).Flares are often, but not always, accompanied by a spectacular coronal mass ejection. The flare ejects clouds of electrons, ions, and atoms through the corona of the sun into space. These clouds typically reach Earth a day or two after the event. The term is also used to refer to similar phenomena in other stars, where the term stellar flare applies.Solar flares affect all layers of the solar atmosphere (photosphere, chromosphere, and corona), when the plasma medium is heated to tens of millions of Kelvin, while the cosmic-ray-like electrons, protons, and heavier ions are accelerated to near the speed of light. They produce radiation across the electromagnetic spectrum at all wavelengths, from radio waves to gamma rays, although most of the energy is spread over frequencies outside the visual range and for this reason the majority of the flares are not visible to the naked eye and must be observed with special instruments. Flares occur in active regions around sunspots, where intense magnetic fields penetrate the photosphere to link the corona to the solar interior.Flares are powered by the sudden (timescales of minutes to tens of minutes) release of magnetic energy stored in the corona. The same energy releases may produce coronal mass ejections (CME), although the relation between CMEs and flares is still not well established.X-rays and UV radiation emitted by solar flares can affect Earth's ionosphere and disrupt long-range radio communications. Direct radio emission at decimetric wavelengths may disturb the operation of radars and other devices that use those frequencies.Solar flares were first observed on the Sun by Richard Christopher Carrington and independently by Richard Hodgson in 1859 as localized visible brightenings of small areas within a sunspot group. Stellar flares can be inferred by looking at the lightcurves produced from the telescope or satellite data of variety of other stars.The frequency of occurrence of solar flares varies, from several per day when the Sun is particularly \"active\" to less than one every week when the Sun is \"quiet\", following the 11-year cycle (the solar cycle). Large flares are less frequent than smaller ones.On July 23, 2012, a massive, and potentially damaging, solar superstorm (solar flare, coronal mass ejection, solar EMP) barely missed Earth, according to NASA. There is an estimated 12% chance of a similar event occurring between 2012 and 2022.".
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- Solar_flare wikiPageExternalLink spaceweather.com.
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- Solar_flare wikiPageExternalLink The_Siberian_Solar_Radio_Telescope.
- Solar_flare wikiPageExternalLink Flares.
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- Solar_flare wikiPageExternalLink www.bbso.njit.edu.
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- Solar_flare wikiPageExternalLink www.njit.edu.
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- Solar_flare wikiPageWikiLink Advanced_Composition_Explorer.
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- Solar_flare wikiPageWikiLink Category:Solar_phenomena.
- Solar_flare wikiPageWikiLink Category:Space_hazards.
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- Solar_flare wikiPageWikiLink Chromosphere.
- Solar_flare wikiPageWikiLink Comet_Shoemaker–Levy_9.
- Solar_flare wikiPageWikiLink Corona.
- Solar_flare wikiPageWikiLink Coronal_mass_ejection.
- Solar_flare wikiPageWikiLink Cosmic_ray.
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- Solar_flare wikiPageWikiLink European_Space_Agency.
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- Solar_flare wikiPageWikiLink Ion.
- Solar_flare wikiPageWikiLink Ionizing_radiation.
- Solar_flare wikiPageWikiLink Ionosphere.
- Solar_flare wikiPageWikiLink JAXA.
- Solar_flare wikiPageWikiLink James_Stanley_Hey.
- Solar_flare wikiPageWikiLink Joule.
- Solar_flare wikiPageWikiLink Kelvin.