Home » News & Blogs » Paper Explainer: Direct Detection Anomalies in light of Gaia Data
Bookmark and Share
physicsmatt

Paper Explainer: Direct Detection Anomalies in light of Gaia Data

15 May 2019, 01:06 UTC
Paper Explainer: Direct Detection Anomalies in light of Gaia Data
(200 words excerpt, click title or image to see full post)

This is an explainer for my recent paper with Gopolang (Gopi) Mohlabeng and Chris Murphy on the implications of recent surveys of dark matter velocity distributions from the Gaia mission on dark matter direct detection. There are a bunch of moving parts in this paper, as we’re trying to tie together some new directions from astrophysics with a long-standing problem in particle dark matter.
Let’s start with the latter first. If you’ve been reading my work in the past, you know that we have pretty good evidence from cosmology that dark matter exists, but we have no idea what dark matter is, as a particle. There are many good ideas for a particle theory of dark matter, so many good ideas that ultimately I think at this point we are not going to resolve the issue without some new experimental evidence.
One of the longest running theoretical ideas for dark matter is called “weakly interacting dark matter” or WIMPs, where dark matter has a weak nuclear charge. The nice thing about this idea is that it naturally produces dark matter through “thermal freeze-out.” Basically, in the early Universe, when things were extremely hot and dense, dark matter was pair-produced ...

Latest Vodcast

Latest Podcast

Advertise PTTU

NASA Picture of the Day

Astronomy Picture of the Day

astronomy_pod