1. Point EM source in an unbounded domain
Solved using the discontinuous Galerkin (DG) method with the complete radiation boundary condition (CRBC) to truncate the boundary.
Point source in the center of the domain
Spatial DG error on the order of 10^{-4}
CRBC error is on the order predicted a priori ~3^{-6}
In the plots below we clip the error to show that the CRBC error does not contaminate the volume
Numerical Mesh
Pointwise energy error of the computed solution

2. Point EM source in an unbounded domain
Solved using the discontinuous Galerkin (DG) method with the complete radiation boundary condition (CRBC) to truncate the boundary.
Point source in the center of the domain
Spatial DG error on the order of 10^-8; Any errors larger come from the CRBC
CRBC error is on the order predicted a priori
Numerical Mesh
Pointwise energy error of the computed solution