culinary_services
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culinary_services [2014/06/05 14:57] warren |
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| {{ ::cassa.png?nolink&200 | Observation of Cassiopeia A. Green shows <sup>44</sup>Ti distribution, blue is <sup>28</sup>Si, and the red shows the Fe distribution. (From Grefenstette et al 2014)}} | {{ ::cassa.png?nolink&200 | Observation of Cassiopeia A. Green shows <sup>44</sup>Ti distribution, blue is <sup>28</sup>Si, and the red shows the Fe distribution. (From Grefenstette et al 2014)}} | ||
| - | Using simulations, we can use these observations to gain insight into the supernova environment. By matching observed abundances, we can gain insight into the environment in which this nucleosynthesis must have taken place and in turn, the details of the explosion mechanism. However, most core-collapse supernova simulations do not include sufficiently large reaction networks to simulate this nucleosynthesis. This makes post-processing a necessary step. | + | Using simulations, we can use these observations to gain insight into the supernova environment. By matching observed abundances, we can gain insight into the environment in which this nucleosynthesis must have taken place and in turn, the details of the explosion mechanism. However, most core-collapse supernova simulations do not include sufficiently large reaction networks to simulate this nucleosynthesis. |
| If the shock heating is sufficient, the material will be in Nuclear Statistical Equilibrium (NSE). The isotopic abundances will be set by the thermodynamic environment (i.e. temperature and density). | If the shock heating is sufficient, the material will be in Nuclear Statistical Equilibrium (NSE). The isotopic abundances will be set by the thermodynamic environment (i.e. temperature and density). | ||
| - | ===Simulations|Simulations=== | + | ===Simulations=== |
| We have chosen to do a parameter space study in peak temperature, density, and electron fraction, tarting with a set parameter space of peak temperatures [T<sub>9</sub> = 4 - 7] and densities [$\rho$ = 10<sup>5</sup> - 10<sup>7</sup> g/cm<sup>3</sup>]. This parameter space roughly corresponds with the shock heated region in simulations of Cassiopeia A-like supernovae (Young & Fryer 2007). | We have chosen to do a parameter space study in peak temperature, density, and electron fraction, tarting with a set parameter space of peak temperatures [T<sub>9</sub> = 4 - 7] and densities [$\rho$ = 10<sup>5</sup> - 10<sup>7</sup> g/cm<sup>3</sup>]. This parameter space roughly corresponds with the shock heated region in simulations of Cassiopeia A-like supernovae (Young & Fryer 2007). | ||
culinary_services.txt ยท Last modified: 2014/06/06 15:52 by long
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