Title: Light emission by accelerated electric, toroidal and anapole dipolar sources,
Abstract: Emission of electromagnetic radiation by accelerated particles with electric,
toroidal and anapole dipole moments is analyzed. It is shown that ellipticity
of the emitted light can be used to differentiate between electric and toroidal
dipole sources, and that anapoles, elementary neutral non-radiating
configurations, which consist of electric and toroidal dipoles, can emit light
under uniform acceleration. The existence of non-radiating configurations in
electrodynamics implies that it is impossible to fully determine the internal
makeup of the emitter given only the distribution of the emitted light. Here we
demonstrate that there is a loop-hole in this `inverse source problem'. Our
results imply that there may be a whole range of new phenomena to be discovered
by studying the electromagnetic response of matter under acceleration.