You don’t need relativity to explain this, because it’s electromagnetic in nature.
“Despite being thin cylinders – similar in dimension to pencils – hundreds of millions of light years long, but just a few million light years in diameter, these fantastic tendrils of matter rotate,” added Noam Libeskind,
They can’t be EM if comprised of matter (but matter can generate EM) and if matter subject to principles of relativity?
Just curious