Slow and fast magnetic reconnection. II. High-temperature turbulent-current sheet

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Magnetohydrodynamics (Mhd), Sun: Corona, Sun: Flares, Sun: Magnetic Fields

Scientific paper

We present a new magnetohydrodynamic model of high-temperature (T ~ 108 K) turbulent-current sheet forming in regions of magnetic reconnection in the solar corona. A structure of the sheet is studied with allowance for such effects as anomalous resistivity of plasma, radiative cooling, anomalous heat conduction. The relative roles of the two latter factors in the current sheet energy balance are shown. The model describes both the slow regime of reconnection (with O-type magnetic configuration in the center of the sheet) and the fast one (with X-type configuration). Energy release power in the current sheet at the fast regime of reconnection is sufficient to account for solar flares and coronal transients.

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