The solar X-ray corona |
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Authors: | L Golub |
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Institution: | (1) Smithsonian Astrophysical Observatory, 60 Garden St., Cambridge, MA |
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Abstract: | The solar corona, and the coronae of solar-type stars, consist of a low-density magnetized plasma at temperatures exceeding
106 K. The primary coronal emission is therefore in the UV and soft x-ray range. The observed close connection between solar
magnetic fields and the physical parameters of the corona implies a fundamental role for the magnetic field in coronal structuring
and dynamics. Variability of the corona occurs on all temporal and spatial scales—at one extreme, as the result of plasma
instabilities, and at the other extreme driven by the global magnetic flux emergence patterns of the solar cycle. |
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