Evidence for primordial magnetogenesis

[LifeIsStrange]

https://arxiv.org/abs/2411.13499
also the question of an equivalent of MOND for modified electromagnetism remains open.
Same for the possible bennet pinch effect in cosmic filaments
also wonder if related to cosmic birefringence

The Faraday Rotation Measure (RM) is a measure of the
polarization angle rotation by birifrangence of the two circular
polarization states, produced when a polarized radiation trav-
els trough a magneto-ionic medium with a magnetic field and
populated with free electrons (a plasma).

also some properties of RM evolve with redshift
btw POSSUM seems to be the next gen survey dedicated to rotation measures
https://arxiv.org/abs/2403.15668

https://www.researchgate.net/publication/356740862_Testing_the_Theory_That_Interstellar_Filaments_Are_Formed_by_the_Bennett_Pinch_With_Recent_Data
https://iopscience.iop.org/article/10.3847/2041-8213/ac3cc1

also distinct from the RM: https://arxiv.org/abs/2106.05989
btw some pinches might allow catalysis of nuclear fusion!
https://en.wikipedia.org/wiki/Z-pinch#:~:text=to%20controlled%20fusion.-,Sheared%2Dflow%20stabilized,-%5Bedit%5D