The magnetospheric eternally collapsing object (MECO) is an alternative model for black holes initially proposed by Indian scientist Abhas Mitra in 1998 and later generalized by American researchers Darryl J. Leiter and Stanley L. Robertson. A proposed observable difference between MECOs and black holes is that a MECO can produce its own intrinsic magnetic field. An uncharged black hole cannot produce its own magnetic field, though its accretion disk can.
I have been an avid amateur cosmologist for 40-some-odd years. I was hooked reading "The Collapsing Universe" by Isaac Asimov. I've been diddling about with it ever since. I learned relativity by reading "Discovering Relativity for Yourself" by Sam Lilley. And I've been playing with it ever...