*chto@uchicago.edu

Machine Learning and Next-Generation Sky Surveys

Chun-Hao To*

Motivation

Amon+ 22

Can we recover this missing signal using galaxy clusters? 

Lucie-Smith+25

See also To+ 24

Studies in hydro sims

Text

Measurement

To+ 24 (also Pandey+24)

Text

Bocquet+24 mass uncertainty
+ 3G mass limits 

+ Baryonification model 

Studies in hydro sims

Text

Measurement

Prediction

To+ 24 (also Pandey+24)

+ Baryonification model 

Studies in hydro sims: it works!

Text

To+ 24 (also Pandey+24)

Implications for cosmology

To+ 24

Implications for cosmology

To+ 24

Implications for cosmology

To+ 24

Application on real data

Dalal+ (incl. CT) 25

ACT DR5

Application on real data

Dalal+ (incl. CT) 25

ACT DR5

Application on real data

Dalal+ (incl. CT) 25

ACT DR5

Different techniques are consistent

Dalal+ (incl. CT) 25

ACT DR5

Plans for SPT

• ACT studies are encouraging, but SPT will be able to constrain baryonic feedback to a much better precision.
   
• Joint analyses of SPT cluster lensing, abundances, and cosmic shear (e.g., Bocquet+ (incl. CT) 25 )
   
• Going beyond clusters! 

Work in progress

TCMB

Stacked Y on galaxies and clusters (z<0.2) to perform a comprehensive studies of baryons 

Work in progress

TCMB

TCMB

redmagic (LRG)

arcmin