RH Code

In the second week of the school, you will be learning about lines that are formed in non Local Thermodynamical Equilibrium conditions (non-LTE). Han Uitenbroek (NSO) will be presenting some of the theory that characterizes this regime for spectral line formation, along with examples of spectral lines computed with the numerical radiative transfer code RH (Rybicky and Hummer), which solves the combined equations of statistical equilibrium and radiative transfer for multi-level atoms and molecules in a plasma under general Non-LTE conditions.

You are not required to download the code for the course, but we are making it available to you in the event that you want to play with it and use it for your own scientific purposes. As usual, please make use of the appropriate citations if you present results from this code in any publication.

You will need a C compiler for the actual source code, and an IDL license in order to use the visualization package. Although very convenient, note that you don't need the IDL visualization package to run RH. However, you will need to write your own routines to read the RH output. The instructions for compilation and installation are in the manual.