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- W4319603590 endingPage "3741" @default.
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- W4319603590 abstract "ABSTRACT We present an emulator that accurately predicts the power spectrum of galaxies in redshift space as a function of cosmological parameters. Our emulator is based on a second-order Lagrangian bias expansion that is displaced to Eulerian space using cosmological N-body simulations. Redshift space distortions are then imprinted using the non-linear velocity field of simulated particles and haloes. We build the emulator using a forward neural network trained with the simulations of the BACCO project, which covers an eight-dimensional parameter space including massive neutrinos and dynamical dark energy. We show that our emulator provides unbiased cosmological constraints from the monopole, quadrupole, and hexadecapole of a mock galaxy catalogue that mimics the BOSS-CMASS sample down to non-linear scales ($ksim 0.6{h, {rm Mpc}^{-1}}$). This work opens up the possibility of robustly extracting cosmological information from small scales using observations of the large-scale structure of the universe." @default.
- W4319603590 created "2023-02-09" @default.
- W4319603590 creator A5004218732 @default.
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- W4319603590 creator A5037442603 @default.
- W4319603590 creator A5042509460 @default.
- W4319603590 creator A5045186703 @default.
- W4319603590 date "2023-02-07" @default.
- W4319603590 modified "2023-10-17" @default.
- W4319603590 title "The bacco simulation project: bacco hybrid Lagrangian bias expansion model in redshift space" @default.
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