Modified Growth of Structure with DES

Funder	Science and Technology Facilities Council
Recipient Organization	University of Cambridge
Country	United Kingdom
Start Date	Sep 30, 2022
End Date	Mar 30, 2026
Duration	1,277 days
Number of Grantees	2
Roles	Student; Supervisor
Data Source	UKRI Gateway to Research
Grant ID	`2750392`

Grant Description

The current project I am working on with Dr Alexandra Amon and Professor George Efstathiou:

Using data from the Dark Energy Survey (DES, of which I am now a part of), I am constraining the suppression of the matter power spectrum on non-linear cosmological scales to source a potential solution to the S8 tension.

This work builds on work from Amon & Efstathiou 2022, where they use data from the Kilo-Degree survey (KiDS) to constrain their 'Amod' parameter that characterises this suppression on non-linear scales. I constrain this parameter using data from DES.

I am also investigating the redshift dependence of this tension, and how the modified growth of structure influence's structure formation at low redshifts.