In part 4 of the “Is it Really a Black Hole Series”, LPPFusion Chief Scientist Eric J. Lerner explains that most astrophysicists don’t consider the possibility that condensed objects can be plasmoids, with magnetic fields comparable to our greater than their gravitational fields, because they are using a wrong approximation to calculate plasma behavior.
When his warnings were not heeded, he repeated them strongly in his Nobel address (https://www.nobelprize.org/prizes/physics/1970/alfven/lecture/), (a clear, non-technical presentation), saying that many basic concepts used by astrophysicists “are not applicable to the conditions prevailing in the cosmos…it is only the plasma itself that does not ‘understand’ how beautiful the theories are and absolutely refuses to obey them.” (See p. 3-4 of PDF, with a simple table comparing wrong and right approaches.)
For a fuller and more technical discussion, see p.15-17 of Alfven’s 1986 paper (http://www.diva-portal.org/smash/get/diva2%3A514247/FULLTEXT01.pdf). MHD theory can’t explain the focused beams of energy that emerge from compact objects such as quasars and Herbig-Haro objects, which are ordinary stars in the early stages of formation. These beams are routinely observed produced by plasmoids in our laboratory experiments, explained by correct plasma theory.