Nonlocal thermal transport in solar flares. II - Spectroscopic diagnostics

Details Nonlocal thermal transport in solar flares. II - Spectroscopic diagnostics Nonlocal thermal transport in solar flares. II - Spectroscopic diagnostics

Mar 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...338.1184k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 338, March 15, 1989, p. 1184-1192. Research supported by the U.S. Navy.

Other

6

Solar Flares, Solar Spectra, Solar X-Rays, Radiative Heat Transfer, Solar Atmosphere, Temperature Profiles, Thermal Radiation, Time Dependence

Scientific paper

Physical parameters obtained for a flaring solar atmosphere in an earlier paper are used here to predict time-dependent emission-line profiles and integrated intensities as a function of position for two spectral lines commonly observed during solar flares: the X-ray resonance lines of Ca XIX and Mg XI. Considerations of ionization nonequilibrium during the rise phase of the flare are addressed, and the effects on the predicted spectral-line characteristics are discussed. It is concluded that some spectroscopic diagnostics favor the nonlocal model, but other long-standing discrepancies between the numerical models and the observations remain unresolved.

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