High Lorentz factor: "The fastest AGN jets are gamma-ray bright, with flow Lorentz factors that range up to at least 45" bu.edu/blazars/paperstodownload/marscher_michiganjets.pdf No exchange of energy: " Forcefree electrodynamics (FFE) describes the electromagnetic field interacting with a plasma in a regime in which the transfer of energy and momentum from the field to the plasma can be neglected" arxiv.org/pdf/1401.6159.pdf

could you elaborate or refer me to some explaination on what you mean by mismatch in electric charge conservation?

Hi, What do you use to make these really nice gifs?

Could you by any chance give an example of a function and a transformation that explains this?

Is there a way you could generalize this to say that all symmetry properties of tensors are preserved regardless of their raised or lowered indices. for example the symmetries of the Riemann tensor.

I found an arxiv version arxiv.org/pdf/1701.02098.pdf