projectideas
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projectideas [2014/05/29 13:53] cyburt |
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| == nuke network: == | == nuke network: == | ||
| - | * Simulate the s-process under AGB conditions. Compare to solar system | + | * Simulate the s-process under AGB conditions. Compare to solar system abundances and presolar grains. How does the result depend on initial composition? How good is the waiting point approximation? |
| - | abundances and presolar grains. How does the result depend on initial | + | |
| - | composition? How good is the waiting point approximation? | + | |
| == BBN: == | == BBN: == | ||
| - | * Quantify the sensitivities of the light elements to variations in the | + | * Quantify the sensitivities of the light elements to variations in the key reaction rates. Propagate uncertainties in nuclear reation rates via Monte Carlo to evaluate the uncertainties in the BBN predictions. |
| - | key reaction rates. Propagate uncertainties in nuclear reation | + | |
| - | rates via Monte Carlo to evaluate the uncertainties in the BBN predictions. | + | |
| - | * Explore the consequences of new physics during BBN. This can include: adding | + | * Explore the consequences of new physics during BBN. This can include: adding neutrino species, modificiation of the gravitational constant, and neutrino degeneracy. For a more challenging calculation, consider the effect of dark matter decays that dissociate 4He. For each of these, what is the effect on the light elements? How can we use light element and cosmological (e.g., CMB) observations to constrain these scenarios? |
| - | neutrino species, modificiation of the gravitational constant, and neutrino | + | |
| - | degeneracy. For a more challenging calculation, consider the effect of | + | |
| - | dark matter decays that dissociate 4He. For each of these, what is the | + | |
| - | effect on the light elements? How can we use light element and cosmological | + | |
| - | (e.g., CMB) observations to constrain these scenarios? | + | |
projectideas.txt · Last modified: 2014/06/06 13:39 by cyburt
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