Turbulence, Energy Transfers and Reconnection in Compressible Coronal Heating Field-line Tangling Models

Astronomy and Astrophysics – Astrophysics – Solar and Stellar Astrophysics

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4 pages, 4 figures, Solar Wind 12 proceedings (in press)

Scientific paper

10.1063/1.3395890

MHD turbulence has long been proposed as a mechanism for the heating of coronal loops in the framework of the Parker scenario for coronal heating. So far most of the studies have focused on its dynamical properties without considering its thermodynamical and radiative features, because of the very demanding computational requirements. In this paper we extend this previous research to the compressible regime, including an energy equation, by using HYPERION, a new parallelized, viscoresistive, three-dimensional compressible MHD code. HYPERION employs a Fourier collocation -- finite difference spatial discretization, and uses a third-order Runge-Kutta temporal discretization. We show that the implementation of a thermal conduction parallel to the DC magnetic field induces a radiative emission concentrated at the boundaries, with properties similar to the chromosphere--transition region--corona system.

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