Cosmological inference from emulator based halo model I: Validation tests with HSC and SDSS mock catalogs

31 Dec 2020 Hironao Miyatake Yosuke Kobayashi Masahiro Takada Takahiro Nishimichi Masato Shirasaki Sunao Sugiyama Ryuichi Takahashi Ken Osato Surhud More Youngsoo Park

We present validation tests of emulator-based halo model method for cosmological parameter inference, assuming hypothetical measurements of the projected correlation function of galaxies, $w_{\rm p}(R)$, and the galaxy-galaxy weak lensing, $\Delta\!\Sigma(R)$, from the spectroscopic SDSS galaxies and the Hyper Suprime-Cam Year1 (HSC-Y1) galaxies. To do this, we use \textsc{Dark Emulator} developed in Nishimichi et al. based on an ensemble of $N$-body simulations, which is an emulation package enabling a fast, accurate computation of halo clustering quantities for flat-geometry $w$CDM cosmologies... (read more)

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Categories


  • COSMOLOGY AND NONGALACTIC ASTROPHYSICS
  • ASTROPHYSICS OF GALAXIES
  • GENERAL RELATIVITY AND QUANTUM COSMOLOGY