Sun and Solar–terrestrial Physics

Jun 29th, 2015
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Acadia University
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The Sun is of central importance in astronomy. On the one hand, many basic processes that occur throughout the cosmos may be well observed in the Sun and, on the other hand, the Sun acts as a source of the radiation and plasma emissions that affect the Earth in many ways.

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Sun and Solarterrestrial PhysicsSun and Solarterrestrial PhysicsThe Sun is of central importance in astronomy. On theone hand, many basic processes that occur throughout thecosmos may be well observed in the Sun and, on the otherhand, the Sun acts as a source of the radiation and plasmaemissions that affect the Earth in many ways. The studyof the interaction of the Sun and its solar wind with theEarth is the burgeoning field of solarterrestrial physics.The magnetospheres of other planets act as probes for thesolar wind. However, many of the fundamental processes,such as how the Suns magnetic field is generated, howits atmosphere is heated, how solar flares occur and howthe solar wind is accelerated, are only just beginning tobe understood. This article attempts an overview of theSun and solarterrestrial physics and links the individualarticles in this encyclopedia into the big picture.The SunThe Sun is of course the nearest star, seen in greatest detail(SUN: BASIC PROPERTIES). The total radiation (SOLAR IRRADIANCE)from the Sun is not constant but, like a variable star, the Sunvaries over a variety of timescales. Treated as a star whoseproperti

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