The non-radiating component of the field generated by a finite monochromatic scalar source distribution ∗

We separate the field generated by a spherically symmetric bounded scalar monochromatic source into a radiative and non-radiative part. The non-radiative part is obtained by projecting the total field on the space spanned by the non-radiating nhomogeneous modes, i.e. the modes which satisfy the inhomogeneous wave equation. Using residue techniques… CONTINUE READING