Detection of the Keplerian decline in the Milky Way rotation curve — mentioned by ccooffee

Sun, 15 Oct 2023 19:54:12 GMT

The Arxiv[0] paper abstract seems much clearer and more informative than the linked article. In particular, it points to WHY the mass has been revised down so far -- there's seemingly a lot less mass at 19+ kiloparsecs (about 62,000 lightyears) from galactic center than we expected the galaxy to have. I'm not an expert so it isn't clear to me if the discussions in the paper about dark-vs-baryonic matter are a theoretical explanation of the gap. Here's a 2019 article[1][1b] describing the mass of the galaxy at 1.5 trillion solar masses. This current research lowers that number to just 200…

Paper and discussion history. A mention is not an endorsement.

Detection of the Keplerian decline in the Milky Way rotation curve · HackerPapers discussions

Detection of the Keplerian decline in the Milky Way rotation curve — mentioned by ccooffee