User talk:TallJimbo/WeakLensing/Mathematics

TallJimbo,

I was looking at the table (convergence and shear components) you've created and I found it strange that the convergence Kappa could ever be negative (<0). Kappa is the ratio of the surface mass density to the critical surface mass density. So, if the convergence were less than 0, this implies negative mass. Could you possibly explain this? Am I just misunderstanding something?

Austen.m.groener rocketboyausten@gmail.com