Robert sent in the link https://iopscience.iop.org/article/10.3847/2041-8213/ac982a … and https://gleamoscope.icrar.org/gleamoscope/trunk/src/ …
and https://www.sarao.ac.za/media-releases/new-meerkat-radio-image-reveals-complex-heart-of-the-milky-way/ … which Robert relates to magnetic filaments in the galactic centre – or the so called ‘intra cluster medium’ of the link. There is no mention of plasma scalability or Birkeland currents, he adds.
The South African Radio Astronomy Observatory [SARAO] has released a MeerKAT telescope image of the the centre of the Milky Way. It shows radio emissions from the region with unprecedented clarity and depth. The region is described as stellar nurseries, outbursting stars, and a supermassive black hole. Radio waves penetrate the intervening dust that obscures the view of the region at other wavelengths, and a population of ‘mysterious radio filaments.’