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3D Hydrodynamical Modelling of the Solar Chromosphere

Ludwig, Hans-Günter LU ; Steffen, Matthias; Wedemeyer, Sven; Freytag, Bernd and Holweger, Hartmut (2003) Stars as Suns : Activity, Evolution and Planets In International Astronomical Union Symposium 219. p.40-40
Abstract
We report on 3D radiation-hydrodynamics modelling of the non-magneticsolar atmosphere with emphasis on the problem of the acoustic heating ofthe chromosphere. Our models include the generation of acoustic waves inthe uppermost layers of the solar convection zone their propagationthrough the photospheric layers and their ultimate transformation intoshock fronts which are dissipated in the chromospheric layers. In thechromosphere we find a bimodal temperature distribution consisting of acool non-shocked and hot shocked gas component. The hot gas is locatedin small-scale filamentary structures associated with propagating shockfronts which evolve rapidly in time. The detailed spatial and temporalinformation provided by the models can be... (More)
We report on 3D radiation-hydrodynamics modelling of the non-magneticsolar atmosphere with emphasis on the problem of the acoustic heating ofthe chromosphere. Our models include the generation of acoustic waves inthe uppermost layers of the solar convection zone their propagationthrough the photospheric layers and their ultimate transformation intoshock fronts which are dissipated in the chromospheric layers. In thechromosphere we find a bimodal temperature distribution consisting of acool non-shocked and hot shocked gas component. The hot gas is locatedin small-scale filamentary structures associated with propagating shockfronts which evolve rapidly in time. The detailed spatial and temporalinformation provided by the models can be exploited to predictobservational diagnostics hitherto unavailable. We present syntheticimages of features in the millimetre and sub-millimetre radio continuumpotentially observable by the Atacama Large Millimetre Array (ALMA). (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
International Astronomical Union Symposium
editor
Dupree, A.K.; Benz, A.O.; and
volume
219
pages
40 - 40
publisher
Astronomical Society of the Pacific
conference name
Stars as Suns : Activity, Evolution and Planets
ISBN
1-583-81163-X
language
English
LU publication?
yes
id
f212c5fe-8ffb-4ff1-bb0b-f451603d5f6b (old id 528225)
date added to LUP
2007-09-21 12:23:00
date last changed
2016-04-16 09:48:35
@inproceedings{f212c5fe-8ffb-4ff1-bb0b-f451603d5f6b,
  abstract     = {We report on 3D radiation-hydrodynamics modelling of the non-magneticsolar atmosphere with emphasis on the problem of the acoustic heating ofthe chromosphere. Our models include the generation of acoustic waves inthe uppermost layers of the solar convection zone their propagationthrough the photospheric layers and their ultimate transformation intoshock fronts which are dissipated in the chromospheric layers. In thechromosphere we find a bimodal temperature distribution consisting of acool non-shocked and hot shocked gas component. The hot gas is locatedin small-scale filamentary structures associated with propagating shockfronts which evolve rapidly in time. The detailed spatial and temporalinformation provided by the models can be exploited to predictobservational diagnostics hitherto unavailable. We present syntheticimages of features in the millimetre and sub-millimetre radio continuumpotentially observable by the Atacama Large Millimetre Array (ALMA).},
  author       = {Ludwig, Hans-Günter and Steffen, Matthias and Wedemeyer, Sven and Freytag, Bernd and Holweger, Hartmut},
  booktitle    = {International Astronomical Union Symposium},
  editor       = {Dupree, A.K. and Benz, A.O.},
  isbn         = {1-583-81163-X},
  language     = {eng},
  pages        = {40--40},
  publisher    = {Astronomical Society of the Pacific},
  title        = {3D Hydrodynamical Modelling of the Solar Chromosphere},
  volume       = {219},
  year         = {2003},
}