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Enthalpy flux cooling of the solar corona

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Abstract

The differential emission measure profile for quiet and flaring solar regions is considered, using a model in which the principal downflow of heat is due to the enthalpy of downward-flowing material, rather than conduction. It is found that the emission measure profile for quiet solar regions is matched well by a downward particle number flux which decreases with temperature. This would be expected if this particle flux is due to heated spicular material falling back onto the chromosphere. In flaring regions, however, a particle flux which increases with temperature is required to explain the steep emission measure profile. This could be a result of mass motions downward out of the flaring loops.

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Authors and Affiliations

  1. Mount Wilson and Las Campanas Observatories of the Carnegie Institution of Washington, 813 Santa Barbara Street, Pasadena, Calif., U.S.A.

    Steven G. Wallenhorst

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  1. Steven G. Wallenhorst
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Wallenhorst, S.G. Enthalpy flux cooling of the solar corona. Sol Phys 77, 167–175 (1982). https://doi.org/10.1007/BF00156102

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  • DOI: https://doi.org/10.1007/BF00156102

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