Role of magneto-convection in plasma dynamic and energy balance above the supergranular network

T. Aiouaz

Role of magneto-convection in plasma dynamic and energy balance above the supergranular network

T. Aiouaz

Research output: Chapter in Book/Report/Conference proceeding › Chapter › Academic

Abstract

The current project aims to model the upper solar atmosphere taking in account the magnetic complexity of the supergranulation pattern. The result of a potential field extrapolation is used as the initial condition for the magnetic field in the framework of a forward 3D MHD model including the calculation of EUV emission lines. The MHD model describes the solar atmosphere from the high chromosphere to the lower solar corona above a synthetic supergranular cell. I present preliminary results on the relation between the magnetic topology, the thermodynamic properties of the plasma (e.g., flow, temperature, density) and the EUV intensity as calculated from the synthetic emission lines. Signatures of the magnetic field concentration is to be found in the corona in the density and temperature structure, and thus in emissivity and intensity, while the magnetic field is almost homogeneous. This model succeeds in reproducing for the first time the supergranular pattern as observed with a spectrometer in the EUV.

Original language	Undefined/Unknown
Title of host publication	Subsurface and atmospheric influences on solar activity : proceedings of a workshop held at National Solar Observatory, Sacramento Peak, Sunspot, New Mexico, USA 16-20 April 2007
Editors	R. Howe, R.W. Komm, K.S. Balasubramaniam, G.J.D. Petrie
Place of Publication	San Francisco
Publisher	Astronomical Society of the Pacific
Pages	173-180
Number of pages	440
ISBN (Print)	978-1-58381-329-4
Publication status	Published - 2008

Publication series

Name	Astronomical Society of the Pacific conference series
Number	383

Access to Document

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Final published version, 442 KB

Cite this

Aiouaz, T. (2008). Role of magneto-convection in plasma dynamic and energy balance above the supergranular network. In R. Howe, R. W. Komm, K. S. Balasubramaniam, & G. J. D. Petrie (Eds.), Subsurface and atmospheric influences on solar activity : proceedings of a workshop held at National Solar Observatory, Sacramento Peak, Sunspot, New Mexico, USA 16-20 April 2007 (pp. 173-180). (Astronomical Society of the Pacific conference series; No. 383). Astronomical Society of the Pacific.

Aiouaz, T. / Role of magneto-convection in plasma dynamic and energy balance above the supergranular network. Subsurface and atmospheric influences on solar activity : proceedings of a workshop held at National Solar Observatory, Sacramento Peak, Sunspot, New Mexico, USA 16-20 April 2007. editor / R. Howe ; R.W. Komm ; K.S. Balasubramaniam ; G.J.D. Petrie. San Francisco : Astronomical Society of the Pacific, 2008. pp. 173-180 (Astronomical Society of the Pacific conference series; 383).

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abstract = "The current project aims to model the upper solar atmosphere taking in account the magnetic complexity of the supergranulation pattern. The result of a potential field extrapolation is used as the initial condition for the magnetic field in the framework of a forward 3D MHD model including the calculation of EUV emission lines. The MHD model describes the solar atmosphere from the high chromosphere to the lower solar corona above a synthetic supergranular cell. I present preliminary results on the relation between the magnetic topology, the thermodynamic properties of the plasma (e.g., flow, temperature, density) and the EUV intensity as calculated from the synthetic emission lines. Signatures of the magnetic field concentration is to be found in the corona in the density and temperature structure, and thus in emissivity and intensity, while the magnetic field is almost homogeneous. This model succeeds in reproducing for the first time the supergranular pattern as observed with a spectrometer in the EUV.",

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Aiouaz, T 2008, Role of magneto-convection in plasma dynamic and energy balance above the supergranular network. in R Howe, RW Komm, KS Balasubramaniam & GJD Petrie (eds), Subsurface and atmospheric influences on solar activity : proceedings of a workshop held at National Solar Observatory, Sacramento Peak, Sunspot, New Mexico, USA 16-20 April 2007. Astronomical Society of the Pacific conference series, no. 383, Astronomical Society of the Pacific, San Francisco, pp. 173-180.

Role of magneto-convection in plasma dynamic and energy balance above the supergranular network. / Aiouaz, T.
Subsurface and atmospheric influences on solar activity : proceedings of a workshop held at National Solar Observatory, Sacramento Peak, Sunspot, New Mexico, USA 16-20 April 2007. ed. / R. Howe; R.W. Komm; K.S. Balasubramaniam; G.J.D. Petrie. San Francisco: Astronomical Society of the Pacific, 2008. p. 173-180 (Astronomical Society of the Pacific conference series; No. 383).

Research output: Chapter in Book/Report/Conference proceeding › Chapter › Academic

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AB - The current project aims to model the upper solar atmosphere taking in account the magnetic complexity of the supergranulation pattern. The result of a potential field extrapolation is used as the initial condition for the magnetic field in the framework of a forward 3D MHD model including the calculation of EUV emission lines. The MHD model describes the solar atmosphere from the high chromosphere to the lower solar corona above a synthetic supergranular cell. I present preliminary results on the relation between the magnetic topology, the thermodynamic properties of the plasma (e.g., flow, temperature, density) and the EUV intensity as calculated from the synthetic emission lines. Signatures of the magnetic field concentration is to be found in the corona in the density and temperature structure, and thus in emissivity and intensity, while the magnetic field is almost homogeneous. This model succeeds in reproducing for the first time the supergranular pattern as observed with a spectrometer in the EUV.

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BT - Subsurface and atmospheric influences on solar activity : proceedings of a workshop held at National Solar Observatory, Sacramento Peak, Sunspot, New Mexico, USA 16-20 April 2007

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Aiouaz T. Role of magneto-convection in plasma dynamic and energy balance above the supergranular network. In Howe R, Komm RW, Balasubramaniam KS, Petrie GJD, editors, Subsurface and atmospheric influences on solar activity : proceedings of a workshop held at National Solar Observatory, Sacramento Peak, Sunspot, New Mexico, USA 16-20 April 2007. San Francisco: Astronomical Society of the Pacific. 2008. p. 173-180. (Astronomical Society of the Pacific conference series; 383).