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- Author:
-
Bruce Fryxell,
Dave Arnett,
Ewald Muller,
Pamela ONeil
- Subject:
- Science and Technology
- Institution Name:
- NASA
- Collection:
-
NASA GSFC Scientific Visualization Studio
- Grade Level:
- Secondary, Post-secondary
- Abstract:
The following calculation shows the development and evolution of Rayleigh-Taylor instabilities which develop behind the supernova blast wave on a time scale of a few hours. The initial model was chosen to provide a good representation for the progenitor star for Supernova 1987A. The calculation was performed using the Piecewise-Parabolic Method for hydrodynamics on a two-dimensional spherical grid with rotational symmetry about the vertical axis and equatorial symmetry about the horizontal axis. The grid contained 800 zones in the radial direction and 400 zones in the angular direction and was allowed to expand homologously with the explosion to maintain as high a resolution as possible in the unstable layer during the evolution. The following sequences show the evolution of the density distribution as well as the distribution of hydrogen, helium, and oxygen within the ejecta to illustrate the amount of mixing caused by the instability. Each sequence shows the evolution in two reference frames. In the first frame, the size of the plot expands with time as the grid expands. For the second reference frame, the size of the plot is kept fixed with the time so that more detail can be seen in the unstable layer.
- Course Type:
- Learning Module
- Languages:
- English
- Material Type:
- Other
- Media Format:
- Graphics/Photos, Text/HTML, Video
- Technical Requirements:
- Real player
- Conditions of Use:
-
Public Domain
Please give credit to NASA GSFC Scientific Visualization Studio
No restrictions on your remixing, redistributing, or making derivative works.
Give credit to the author, as required.
Your remixing, redistributing, or making derivatives works comes with some
restrictions, including how it is shared.
Your redistributing comes with some restrictions. Do not remix or make
derivative works.
Copyrighted materials, available under Fair Use and the TEACH Act for US-based
educators, or other custom arrangements. Go to the resource provider to see
their individual restrictions.
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