Hello everyone, I am working on a project in astrophysics in which I need to include now some type of particle distribution (as a function of the radius). I was wondering if there is some accepted function that would describe the number of particles per radius in astrophysics. Saturn's rings would make a perfect example for what I'm trying to do. So say for Saturn's rings, is there anything known about the distribution or the density of particles (as a function of the radius) in it? Thanks in advance.