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SUMMARY:Cosmological constraints from galaxy-galaxy lensing and galaxy clu
 stering with HSC-Y1 and BOSS data: the first application of emulator-based
  halo model to cosmology analysis - Hironao Miyatake (Nagoya University)
DTSTART:20211206T130000Z
DTEND:20211206T140000Z
UID:TALK163849@talks.cam.ac.uk
CONTACT:James Bonifacio
DESCRIPTION:The combination of galaxy-galaxy lensing and clustering is rec
 ently emerging as a “standard” cosmological probe of structure growth\
 , which has been used in the stage-III weak lensing surveys including DES 
 and KiDS. In this talk\, we report cosmological constraints from clusterin
 g signals of the BOSS spectroscopic galaxies and lensing signals measured 
 using BOSS galaxies as lenses galaxies and Subaru HSC-Y1 photometric galax
 ies as source galaxies\, exploiting the signals by pushing the scale cuts 
 towards small scales. The challenge lies in building a robust theoretical 
 model that can be used at the non-linear regime. For this purpose\, we bui
 lt a model by combining DarkEmulator\, a newly developed cosmology emulato
 r that can compute halo statistics such as halo mass function\, halo-matte
 r correlation function\, and halo-halo correlation function with a few per
 cent accuracy\, with an analytical halo-galaxy connection model. We report
  the robustness test of our model with mock simulations\, which is dubbed 
 as “Cosmology Challenge\,” and then present cosmological constraints w
 e obtained from the HSC-Y1 and BOSS data.
LOCATION:CMS\, Pav. B\, CTC Common Room (B1.19) [Potter Room]
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