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culinary_services [2014/06/02 17:50]
long
culinary_services [2014/06/03 18:47]
long
Line 9: Line 9:
 Nathan Parzuchowski (analysis)\\ Nathan Parzuchowski (analysis)\\
  
-**TOPIC** \\+==== TOPIC ====
 Sensitivity studied of <​sup>​44</​sup>​Ti production in in core-collapse supernova environments. Sensitivity studied of <​sup>​44</​sup>​Ti production in in core-collapse supernova environments.
 +
 +**[[Scientific Background|Scientific Background]]**
  
 **Recipe** \\ **Recipe** \\
-Starting with a set parameter space of peak temperatures [T<​sub>​9</​sub>​ = 4 - 7] and densities [].+Starting 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>​]
 + 
 +We use analytic adiabatic freeze-out trajectories (Hoyle et al. 1964; Fowler & Hoyle 1964) which satisfy the differential equations:​ 
 + 
 +\begin{equation} 
 +\frac{dT}{dt} = \frac{-T}{3\tau} \hspace{1cm} \frac{d\rho}{dt} = -\frac{\rho}{\tau} 
 +\end{equation}  
 + 
 +Where $\tau$ is some static free-fall timescale. 
 +This **obviously** leads to: 
 + 
 +\begin{equation} 
 +T(t) = T_0 exp(-t/​3\tau) \hspace{1cm} \rho (t) = \rho_0 exp(-t/​\tau) 
 +\end{equation} 
 +where $T_0$ and $\rho_0$ are the peak temperature and density in the supernova.  
 + 
 +Then you run the code, and it doesn'​t work
  
 **REFERENCES** \\ **REFERENCES** \\
-[[http://​iopscience.iop.org/​0067-0049/​191/​1/​66|Trends in 44Ti and 56Ni from Core-Collapse Supernovae]]+[[http://​iopscience.iop.org/​0067-0049/​191/​1/​66|Trends in 44Ti and 56Ni from Core-Collapse Supernovae]]\\ 
 +[[http://​iopscience.iop.org/​0004-637X/​504/​1/​500|Nuclear Reactions Governing the Nucleosynthesis of 44Ti]]\\ 
 +[[http://​www.sciencedirect.com/​science/​article/​pii/​S1387647303002707|X-ray and gamma-ray observations of Cas A]]
culinary_services.txt · Last modified: 2014/06/06 15:52 by long