Plasma heating in the solar corona by reconnecting current sheet.

Details Plasma heating in the solar corona by reconnecting current sheet. Plasma heating in the solar corona by reconnecting current sheet.

Apr 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26a...320l..53o&link_type=abstract

Astronomy and Astrophysics, v.320, p.L53-L56

Astronomy and Astrophysics

Astrophysics

2

Magnetohydrodynamics, Sun: Corona, Sun: Flares, Sun: Magnetic Fields

Scientific paper

Flares of all scales, including nanoflares, are probably responsible for heating the solar corona. We propose a new model, describing in terms of self-similar solutions the process of plasma heating in the corona by thermal fluxes from high-temperature current sheets, where magnetic field lines are reconnected. The model demonstrates high efficiency of such a heating mechanism in the case of flares. The differential emission measure of heated plasma is determined as a function of temperature. The spectral line intensities are calculated for ions Ca XIX, Fe XXV, and Fe XXVI. The pictures of radiative source (spatial distributions of the lines intensities) are constructed. The results predicted by the model are discussed to compare with spectral and spatial observations of solar flares in soft X-rays.

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