I found an article https://arxiv.org/abs/1703.07365 and also it says that we should change current standart model about DM. Also I find this; "If this "wobbling" is not an unknown astrophysical phenomenon and in fact the result of the behaviour of dark matter, then it is inconsistent with the standard model of dark matter and can only be explained if dark matter particles can interact with each other -- a strong contradiction to the current understanding of dark matter. This may indicate that new fundamental physics is required to solve the mystery of dark matter." (https://www.sciencedaily.com/releases/2017/10/171026103110.htm says that, para. 7) It says that BGC are making some kind of oscillation in the galaxy cluster.Or I understand like that at least. 1-What's the critical points in this article that we should be understand it ? ( like just asking the general idea cause I didnt quite get it). 2- In the light of this new evidence, how it will effect properities of DM, DM Halo or DM density profiles ?