Mechanisms for MHD poynting flux generation in simulations of solar photospheric magnetoconvection

Shelyag, Sergiy, Mathioudakis, Mihalis and Keenan, Francis (2012) Mechanisms for MHD poynting flux generation in simulations of solar photospheric magnetoconvection. The Astrophysical Journal, 753 (1). L22. ISSN 2041-8205

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Official URL: http://dx.doi.org/10.1088/2041-8205/753/1/L22

Abstract

We investigate the generation mechanisms of MHD Poynting flux in the magnetized solar photosphere. Using radiative MHD modeling of the solar photosphere with initial magnetic configurations that differ in their field strength and geometry, we show the presence of two different mechanisms for MHD Poynting flux generation in simulations of solar photospheric magnetoconvection. The weaker mechanism is connected to vertical transport of weak horizontal magnetic fields in the convectively stable layers of the upper photosphere, while the stronger is the production of Poynting flux in strongly magnetized intergranular lanes experiencing horizontal vortex motions. These mechanisms may be responsible for the energy transport from the solar convection zone to the higher layers of the solar atmosphere.

Item Type: Article
Uncontrolled Keywords: magnetohydrodynamics (MHD), plasmas, Sun: photosphere, Sun: surface magnetism
Subjects: F300 Physics
F500 Astronomy
G100 Mathematics
Department: Faculties > Engineering and Environment > Mathematics and Information Sciences
Depositing User: Sergiy Shelyag
Date Deposited: 23 May 2016 10:13
Last Modified: 14 May 2017 03:41
URI: http://nrl.northumbria.ac.uk/id/eprint/26899

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