The BACCO simulation project: a baryonification emulator with neural networks

@article{Arico2021TheBS,
  title={The BACCO simulation project: a baryonification emulator with neural networks},
  author={G. Arico and Raul E Angulo and Sergio Contreras and Lurdes Ondaro-Mallea and Marcos Pellejero-Iba{\~n}ez and Matteo Zennaro},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2021}
}
We present a neural network emulator for baryonic effects in the non-linear matter power spectrum. We calibrate this emulator using more than 50 000 measurements in a 15D parameter space, varying cosmology and baryonic physics. Baryonic physics is described through a baryonification algorithm, which has been shown to accurately capture the relevant effects on the power spectrum and bispectrum in state-of-the-art hydrodynamical simulations. Cosmological parameters are sampled using a cosmology… 
The BACCO simulation project: exploiting the full power of large-scale structure for cosmology
We present the BACCO project, a simulation framework specially designed to provide highly-accurate predictions for the distribution of mass, galaxies, and gas as a function of cosmological
Emulation of baryonic effects on the matter power spectrum and constraints from galaxy cluster data
Baryonic feedback effects consist of a major systematic for upcoming weak-lensing and galaxy-clustering surveys. In this paper, we present an emulator for the baryonic suppression of the matter power
Accelerating Large-Scale-Structure data analyses by emulating Boltzmann solvers and Lagrangian Perturbation Theory
The linear matter power spectrum is an essential ingredient in all theoretical models for interpreting large-scale-structure observables. Although Boltzmann codes such as CLASS or CAMB are very
Accelerating Large-Scale-Structure data analyses by emulating Boltzmann solvers and Lagrangian Perturbation Theory
The linear matter power spectrum is an essential ingredient in all theoretical models for interpreting large-scale-structure observables. Although Boltzmann codes such as CLASS or CAMB are very
On the road to per cent accuracy – V. The non-linear power spectrum beyond ΛCDM with massive neutrinos and baryonic feedback
In the context of forthcoming galaxy surveys, to ensure unbiased constraints on cosmology and gravity when using non-linear structure information, per cent-level accuracy is required when modelling
Large-scale dark matter simulations
We review the field of collisionless numerical simulations for the large-scale structure of the Universe. We start by providing the main set of equations solved by these simulations and their
Synergy between cosmological and laboratory searches in neutrino physics: a white paper
The intersection of the cosmic and neutrino frontiers is a rich field where much discovery space still remains. Neutrinos play a pivotal role in the hot big bang cosmology, influencing the dynamics
Constraining the Baryonic Feedback with Cosmic Shear Using the DES Year-3 Small-Scale Measurements
TLDR
The final round of the WTA Finals was played on Saturday with the top eight finishers securing a place in the quarter-finals for the first time since the tournament was revamped in 2009.

References

SHOWING 1-10 OF 66 REFERENCES
The BACCO simulation project: exploiting the full power of large-scale structure for cosmology
We present the BACCO project, a simulation framework specially designed to provide highly-accurate predictions for the distribution of mass, galaxies, and gas as a function of cosmological
The Mira-Titan Universe. III. Emulation of the Halo Mass Function
We construct an emulator for the halo mass function over group and cluster mass scales for a range of cosmologies, including the effects of dynamical dark energy and massive neutrinos. The emulator
Simultaneous modelling of matter power spectrum and bispectrum in the presence of baryons
We demonstrate that baryonification algorithms, which displace particles in gravity-only simulations according to physically-motivated prescriptions, can simultaneously capture the impact of baryonic
hmcode-2020: improved modelling of non-linear cosmological power spectra with baryonic feedback
We present an updated version of the HMcode augmented halo model that can be used to make accurate predictions of the non-linear matter power spectrum over a wide range of cosmologies. Major
Baryonic effects for weak lensing. Part I. Power spectrum and covariance matrix
Baryonic feedback effects lead to a suppression of the weak lensing angular power spectrum on small scales. The poorly constrained shape and amplitude of this suppression is an important source of
How to add massive neutrinos to your ΛCDM simulation – extending cosmology rescaling algorithms
Providing accurate predictions for the spatial distribution of matter and luminous tracers in the presence of massive neutrinos is an important task, given the imminent arrival of highly accurate
The Aemulus Project. II. Emulating the Halo Mass Function
Existing models for the dependence of the halo mass function on cosmological parameters will become a limiting source of systematic uncertainty for cluster cosmology in the near future. We present a
The effects of galaxy formation on the matter power spectrum: a challenge for precision cosmology
Upcoming weak lensing surveys, such as LSST, EUCLID and WFIRST, aim to measure the matter power spectrum with unprecedented accuracy. In order to fully exploit these observations, models are needed
THE COYOTE UNIVERSE EXTENDED: PRECISION EMULATION OF THE MATTER POWER SPECTRUM
Modern sky surveys are returning precision measurements of cosmological statistics such as weak lensing shear correlations, the distribution of galaxies, and cluster abundance. To fully exploit these
The Aemulus Project. III. Emulation of the Galaxy Correlation Function
Using the N-body simulations of the AEMULUS Project, we construct an emulator for the non-linear clustering of galaxies in real and redshift space. We construct our model of galaxy bias using the
...
...