====== EXERCISES ====== **[[RXNnetworkEX|Reaction Networks]]**, **[[NuclPhysInput|Nucl Physics Input]]**, **[[HydroEX|Hydro]]**, **[[BBNEX|BBN]]** **Download, compile and run the Big Bang Nucleosynthesis Code** - Download the [[http://cococubed.asu.edu/code_pages/net_bigbang.shtml|Big Bang Nucleosynthesis Code]]. - Compile the code with your fortran90 compiler. - Report in the Reaction Network Code discussion thread your success with machine information. - Generate light element abundance predictions for a range of initial baryon-to-photon ratios, $\eta$. * Create the "Schramm Plot"{{:schrammplot.jpg?direct&100|Schramm Plot: Please note that these lines have a finite thickness. This thickness denotes the uncertainties from nuclear reaction rates, propagated into the abundance predictions.}} - Repeat with $N_\nu = 2$ and $4$. ~~DISCUSSION|Big Bang Nucleosynthesis Exercises Discussion~~