No, this is also possible, but I meant mostly rays like I've shown. Actually I sort of understand why effect like you've shown occurs and what causes it, but for the rays - I have no clue, but in order to model it appropriately I need to understand the science behind the effect, and have some quantitative description of effect (i.e. mathematical model).
That would be great. So far most of issues that were reported were mostly regarding visual glitches, all CTDs that were reported so far were caused either by some dll missing, or by outdated drivers
As far as I remember an open source planetarium software called Celestia has this rays of light effect around sun. Maybe taking a look at that might help.