Why Jefimenko equations ? (A comment on "Multipole radiation fields from the Jefimenko equation...", by R. de Melo e Souza et al, Am. J. Phys. 77 (1), 67-72 (2009), arXiv:0812.4679)

TL;DR

This paper discusses the features and potential generalizations of the multipolar expansion of radiated power from confined charge-current systems, focusing on the Jefimenko equations and their implications.

Contribution

It provides insights into the multipolar expansion of radiation fields and explores the possibility of extending this expansion to higher orders.

Findings

Analysis of multipolar expansion features

Discussion on generalization to higher orders

Implications for radiation field calculations

Abstract

In this comment, we discuss some features of the multipolar expansion of the power radiated by a confined system of charges and currents, and the possibility of generalization to a higher arbitrary order of the multipolar expansion.