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Paper Explainer: Gravitational probes of dark matter physics

20 Dec 2017, 01:08 UTC
Paper Explainer: Gravitational probes of dark matter physics
(200 words excerpt, click title or image to see full post)

This is description of my recent paper with Annika Peter of OSU, where we consider how to use gravitational measurements of dark matter (that is: astronomy and cosmology) to understand the particle physics of dark matter. I have a separate post on a very fun section of the paper, where we think about what you could learn about the Standard Model if you were made of dark matter and could see dark matter (but couldn't see baryons). Beyond that motivating thought experiment, this monster of a paper (126 pages and over 600 citations) is trying to cover a lot of ground. The central thesis of the paper is that there is a huge potential to learn about the properties of dark matter: things like mass, interactions, production, etc using measurements from astronomy. This is not a completely novel idea: we know a great deal about dark matter from astronomy and cosmology (for example: dark matter is "cold" and not "hot"). However, there is an immense opportunity in the near future to do far more, thanks to improvements in simulation and some powerful new astronomical surveys which will be occurring. To take advantage of all this new astronomical data, we particle ...

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