Question Bursting and killing particles from a script.

I want to have a burst of around 2000 particles based on the rotation of a object and I want to fade those particles based on the rotation too. For example if the angle is >n and less than <n+20 I want to do a single burst and if the angle is anything different I want to fade the particles. What attributes should I set on the vfx graph so I can control them trough events.