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John Peacock (Edinburgh)
Monday 12 February 2018, 13:00-14:00
Cosmology from large-scale structure: concordance and discordance
- 👤 Speaker: John Peacock (Edinburgh)
- 📅 Date & Time: Monday 12 February 2018, 13:00 - 14:00
- 📍 Venue: CMS, Pav. B, CTC Common Room (B1.19) [Potter Room]
Abstract
I will review some recent and forthcoming datasets that aim to extract fundamental cosmology from the galaxy distribution, particularly the DES and DESI experiments. A particular issue in this field is the control of systematics, and I will discuss steps that are taken to ensure that results of a given experiment are internally consistent. But there has been a recent tendency for less than perfect agreement between different experiments (“tensions”), indicating either possible new physics or undiagnosed systematics. I will discuss a proposal for how the latter may be allowed for in order to derive conservative limits on cosmological parameters.
Series This talk is part of the Cosmology Lunch series.
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