I have no idea about gravitational self interaction, however I think it could be of some help for sake of clarity to reach a definite (hopefully) conclusion at least on some of the proposed possibilities to substitute DM with some GR unexpected, weak field effect. It seems quite obvious that...
I think GEM solutions are quite clearly ruled out. The burden of proof is on the proponent, not on people producing counter arguments, and the counter arguments seem quite strong. In any case the single argument that I think should close the debate about GEM (and we can notice that no answer is...
I agree with you about MOND. In fact (I did some work on MOND, some also in collaboration with some of the Authors in the papers you mention) one of the phenomenological advantages of MOND over the (current) GR proposals, is that MOND has an unifying concept that (in principle) is able to deal...
As an astronomer, I have a few general comments on the current (interesting) discussion. From the astronomical point of view, it is a little bit surprising that a few, well established empirical facts, appear to be ignored. First: the flat rotation curve of disk galaxies is just one (and...
Rotation curves of disk galaxies are just one of the reasons astronomers invoke DM. DM is also needed (in newtonian gravity) also in elliptical galaxies (and in clusters of galaxies) many of them non rotating appreciably: this very simple empirical fact should be enough to close complicated...