tag:blogger.com,1999:blog-7315236707728759521.post1596494778377875705..comments2024-03-28T21:52:52.100-06:00Comments on Dispatches From Turtle Island: Inferred Dark Matter Distributions In Galaxy Clusters Also Track Baryonic MatterAndrew Oh-Willekehttp://www.blogger.com/profile/02537151821869153861noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-7315236707728759521.post-30365477593401863732018-08-09T14:54:08.869-06:002018-08-09T14:54:08.869-06:00Yes. See generally this thread https://www.physics...Yes. See generally this thread https://www.physicsforums.com/threads/how-certain-is-dark-matter.952790/page-3#post-6038193andrewhttps://www.blogger.com/profile/08172964121659914379noreply@blogger.comtag:blogger.com,1999:blog-7315236707728759521.post-61853823419000391552018-08-08T16:44:40.187-06:002018-08-08T16:44:40.187-06:00is there a modified gravity that looks like collis...is there a modified gravity that looks like collisionless dark matter?<br /><br />other than deur that is?<br /><br /><br />there's also the issue of large scale structure formation and gravitational lensingneohttps://www.blogger.com/profile/17318664916557810347noreply@blogger.comtag:blogger.com,1999:blog-7315236707728759521.post-92040362251420351842018-08-08T14:36:47.486-06:002018-08-08T14:36:47.486-06:00@neo
"the third peak in cmb implies dark ma...@neo <br /><br />"the third peak in cmb implies dark matter is truly collisionless"<br /><br />But, the inferred distribution of dark matter in galaxies and clusters today, and the 21cm data, contradicts this inference. Essentially, the whole of the data overconstrains the parameter space for dark matter interactions with other matter.<br /><br />Of course, if we have modified gravity that merely looks like collisionless dark matter, the paradox is resolved.andrewhttps://www.blogger.com/profile/08172964121659914379noreply@blogger.comtag:blogger.com,1999:blog-7315236707728759521.post-35697868084612362392018-08-08T14:30:05.501-06:002018-08-08T14:30:05.501-06:00"dark matter cannot be truly collisionless&qu..."dark matter cannot be truly collisionless"<br /><br />the third peak in cmb implies dark matter is truly collisionless<br />neohttps://www.blogger.com/profile/17318664916557810347noreply@blogger.com