The total emission measure of the corona

Details The total emission measure of the corona The total emission measure of the corona

Aug 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986azh....63..762b&link_type=abstract

Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 63, July-Aug. 1986, p. 762-767. In Russian.

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4

Emission Spectra, Solar Corona, Solar Flux Density, Stellar Coronas, Stellar Radiation, X Ray Stars, Density Distribution, Solar Temperature, Stellar Structure

Scientific paper

Under the assumption of the hydrostatic density distribution in an isothermal corona analytic expressions are derived for the total emission measure (EM) of a stellar corona. In an application to the sun it is obtained from several eclipse observations of the white-light corona that EM = 5×1048 - 5×1049cm-3, depending on the phase of the cycle. The formulae presented allow to determine, from EM and T known from X-ray observations, the density at the stellar corona base.

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