Relativistic Charge
Electric Fields Of Relativistic Non-Uniformly Moving Charges
If electric charges move non-uniformly at relativistic speeds, they generate light. Nearly all light generation in the Universe is due to this effect (from a classical physics point-of-view). The animations below show several important examples. The paper describing the details of the calculations can be found here.
Electric field (density plot) and electric field lines (red) of a point charge that is suddenly accelerated from zero to ~0.71 light speed.
Bremsstrahlung: Electric field and field lines for a point charge moving at ~0.71 light speed and suddenly stopped in its motion (e.g. by jamming into a solid).
Electric field and field lines for a vertically oscillating point charge. Maximum oscillation speed is 0.8 light speed.
Motion in a free electron laser: Charge uniformly moving with ~0.71 light speed from left to right and oscillating with max. 0.1 light speed up and down.
Synchrotron where charge is moving with 0.6 light speed around green circle.
Synchrotron where charge is moving with 0.9 light speed around green circle.