Encyclopedia of Geomagnetism and Paleomagnetism

2007 Edition
| Editors: David Gubbins, Emilio Herrero-Bervera

Magnetic Field of Sun

  • S. Tobias
Reference work entry
DOI: https://doi.org/10.1007/978-1-4020-4423-6_177
The Sun has been observed to exhibit a breathtaking variety of magnetic phenomena on a vast range of spatial and temporal scales. These vary in spatial scale from the solar radius down to the limit of present resolution of the most powerful satellite instrumentation, and with durations varying from minutes to hundreds of years, encompassing the famous 11‐year sunspot cycle. This dynamic and active field, which is visible in extreme ultraviolet wavelengths as shown in Figure M26/Plate 14a, is responsible for all solar magnetic phenomena, such as sunspots, solar flares, coronal mass ejections and the solar wind, and also heats the solar corona to extremely high temperatures. These have important terrestrial consequences, causing severe magnetic storms and major disruption to satellites, as well as having a possible impact on the terrestrial climate. The magnetic field also plays a major role in the evolution of the Sun as a star, with magnetic braking drastically reducing the angular...
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© Springer-Verlag 2007

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  • S. Tobias

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