Radiative transfer codes are not straight-forward and are often plagued by convergence uncertainties, sampling errors and gridding problems. These errors can easily remain unnoticed because it is difficult to predict beforehand what the solution of a complicated multi-level, non-LTE molecular excitation problem is.
This page is intended to help scientists working on such programs. Pre-defined test-cases, including molecular data-files, provide an opportunity to test the codes against others.
|GOALS OF THIS PAGE :|
|1||Enable scientists to test and debug their codes|
|2||Comparison of many different programs|
| 3 ||Discussion on various problems: (Convergence / including dust / including maser transitions)|
|4 ||Reveal the strong and weak points of the various methods.|
The pre-defined test-cases can be found by clicking on test problems (see left frame). For each problem given, there are three options: first: the problem can be downloaded. The file is in a tar format and includes a README file, the problem itself, the molecular datafile to be used and a few fortran codes enabling you to read the molecular data-file. Second: the results available to date can be viewed on screen. Third: the results available so far can be down-loaded. We would appreciate it very much if users send their results to firstname.lastname@example.org. The results will be discussed with the author before they are added on to the web-page.