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SUMMARY:Andrej Dvornik & Constance Mahony - KiDS-1000: Combined halo-model
  cosmology constraints from galaxy abundance\, galaxy clustering and galax
 y-galaxy lensing - featuring beyond-linear halo bias - Andrej Dvornik & Co
 nstance Mahony - Ruhr-Universität Bochum
DTSTART:20221121T130000Z
DTEND:20221121T140000Z
UID:TALK192941@talks.cam.ac.uk
CONTACT:Dongwon Han
DESCRIPTION:We present constraints on the flat ΛCDM cosmological model th
 rough a joint analysis of galaxy abundance\, galaxy clustering and galaxy-
 galaxy lensing observables with the Kilo-Degree Survey. Our theoretical mo
 del combines a flexible conditional stellar mass function\, to describe th
 e galaxy-halo connection\, with a cosmological N-body simulation-calibrate
 d halo model to describe the non-linear matter field. First\, we will intr
 oduce the halo model and present a vital correction to the underlying assu
 mptions - beyond-linear halo bias. Then we will present our cosmological r
 esults and show that they are comparable to\, and consistent with\, joint 
 ‘3x2pt’ clustering-lensing analyses that additionally include a cosmic
  shear observable. This analysis therefore brings attention to the signifi
 cant constraining power in the often-excluded non-linear scales for galaxy
  clustering and galaxy-galaxy lensing observables.
LOCATION:CMS\, Pav. B\, CTC Common Room (B1.19) [Potter Room]
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