Jl. Zhang et Ks. Cheng, RADIATION FORMULAS FOR A RELATIVISTIC CHARGED-PARTICLE MOVING IN A CURVED SPIRAL TRAJECTORY, Physics letters. A, 208(1-2), 1995, pp. 47-52
We present some analytical formulae for the radiation emitted by a rel
ativistic charged particle moving in a curved spiral trajectory. This,
newly considered, mechanism can in general differ significantly from
conventional synchrotron and curvature radiation mechanisms. Polarizat
ion measurements may prove to be a good method to differentiate this m
echanism from the other two mechanisms.