All Outputs (11)

Higher order initial conditions with massive neutrinos (2022)
Journal Article
Elbers, W., Frenk, C. S., Jenkins, A., Li, B., & Pascoli, S. (2022). Higher order initial conditions with massive neutrinos. Monthly Notices of the Royal Astronomical Society, 516(3), https://doi.org/10.1093/mnras/stac2365

The discovery that neutrinos have mass has important consequences for cosmology. The main effect of massive neutrinos is to suppress the growth of cosmic structure on small scales. Such growth can be accurately modelled using cosmological N-body simu... Read More about Higher order initial conditions with massive neutrinos.

FORGE - the f(R) gravity cosmic emulator project I: Introduction and matter power spectrum emulator (2022)
Journal Article
Arnold, C., Li, B., Giblin, B., Harnois-Déraps, J., & Cai, Y.-C. (2022). FORGE - the f(R) gravity cosmic emulator project I: Introduction and matter power spectrum emulator. Monthly Notices of the Royal Astronomical Society, 515(3), 4161-4175. https://doi.org/10.1093/mnras/stac1091

We present a large suite of cosmological simulations, the FORGE (F-of-R Gravity Emulator) simulation suite, which is designed to build accurate emulators for cosmological observables in galaxy clustering, weak gravitational lensing, and galaxy cluste... Read More about FORGE - the f(R) gravity cosmic emulator project I: Introduction and matter power spectrum emulator.

Fingerprints of modified gravity on galaxies in voids (2022)
Journal Article
Cataldi, P., Pedrosa, S., Padilla, N., Landau, S., Arnold, C., & Li, B. (2022). Fingerprints of modified gravity on galaxies in voids. Monthly Notices of the Royal Astronomical Society, 515(4), 5358-5374. https://doi.org/10.1093/mnras/stac2122

We search for detectable signatures of f(R) gravity and its chameleon screening mechanism in the baryonic and dark matter (DM) properties of simulated void galaxies. The enhancement of the gravitational acceleration can have a meaningful impact on th... Read More about Fingerprints of modified gravity on galaxies in voids.

Spherical accretion of collisional gas in modified gravity I: self-similar solutions and a new cosmological hydrodynamical code (2022)
Journal Article
Zhang, H., Weinzierl, T., Schulz, H., & Li, B. (2022). Spherical accretion of collisional gas in modified gravity I: self-similar solutions and a new cosmological hydrodynamical code. Monthly Notices of the Royal Astronomical Society, 515(2), 2464-2482. https://doi.org/10.1093/mnras/stac1991

The spherical collapse scenario has great importance in cosmology since it captures several crucial aspects of structure formation. The presence of self-similar solutions in the Einstein-de Sitter (EdS) model greatly simplifies its analysis, making i... Read More about Spherical accretion of collisional gas in modified gravity I: self-similar solutions and a new cosmological hydrodynamical code.

Non-linear reconstruction of features in the primordial power spectrum from large-scale structure (2022)
Journal Article
Li, Y., Zhu, H.-M., & Li, B. (2022). Non-linear reconstruction of features in the primordial power spectrum from large-scale structure. Monthly Notices of the Royal Astronomical Society, 514(3), 4363-4378. https://doi.org/10.1093/mnras/stac1544

Potential features in the primordial power spectrum have been searched for in galaxy surveys in recent years since these features can assist in understanding the nature of inflation. The null detection to date suggests that any such features should b... Read More about Non-linear reconstruction of features in the primordial power spectrum from large-scale structure.

A general framework to test gravity using galaxy clusters VI: Realistic galaxy formation simulations to study clusters in modified gravity (2022)
Journal Article
Mitchell, M. A., Arnold, C., & Li, B. (2022). A general framework to test gravity using galaxy clusters VI: Realistic galaxy formation simulations to study clusters in modified gravity. Monthly Notices of the Royal Astronomical Society, 514(3), 3349-3365. https://doi.org/10.1093/mnras/stac1528

We present a retuning of the IllustrisTNG baryonic physics model which can be used to run large-box realistic cosmological simulations with a lower resolution. This new model employs a lowered gas density threshold for star formation and reduced ener... Read More about A general framework to test gravity using galaxy clusters VI: Realistic galaxy formation simulations to study clusters in modified gravity.

Towards an accurate model of small-scale redshift-space distortions in modified gravity (2022)
Journal Article
Ruan, C.-Z., Cuesta-Lazaro, C., Eggemeier, A., Hernández-Aguayo, C., Baugh, C. M., Li, B., & Prada, F. (2022). Towards an accurate model of small-scale redshift-space distortions in modified gravity. Monthly Notices of the Royal Astronomical Society, 514(1), 440-459. https://doi.org/10.1093/mnras/stac1345

The coming generation of galaxy surveys will provide measurements of galaxy clustering with unprecedented accuracy and data size, which will allow us to test cosmological models at much higher precision than achievable previously. This means that we... Read More about Towards an accurate model of small-scale redshift-space distortions in modified gravity.

Fast full N-body simulations of generic modified gravity: conformal coupling models (2022)
Journal Article
Ruan, C.-Z., Hernández-Aguayo, C., Li, B., Arnold, C., Baugh, C. M., Klypin, A., & Prada, F. (2022). Fast full N-body simulations of generic modified gravity: conformal coupling models. Journal of Cosmology and Astroparticle Physics, 2022(5), Article 18. https://doi.org/10.1088/1475-7516/2022/05/018

We present mg-glam, a code developed for the very fast production of full N-body cosmological simulations in modified gravity (MG) models. We describe the implementation, numerical tests and first results of a large suite of cosmological simulations... Read More about Fast full N-body simulations of generic modified gravity: conformal coupling models.

Cosmological forecasts with the clustering of weak lensing peaks (2022)
Journal Article
Davies, C. T., Cautun, M., Giblin, B., Li, B., Harnois-Déraps, J., & Cai, Y.-C. (2022). Cosmological forecasts with the clustering of weak lensing peaks. Monthly Notices of the Royal Astronomical Society, 513(4), 4729-4746. https://doi.org/10.1093/mnras/stac1204

Maximizing the information that can be extracted from weak lensing (WL) measurements is a key goal for upcoming stage IV surveys. This is typically achieved through statistics that are complementary to the cosmic shear two-point correlation function,... Read More about Cosmological forecasts with the clustering of weak lensing peaks.

The matter density PDF for modified gravity and dark energy with Large Deviations Theory (2022)
Journal Article
Cataneo, M., Uhlemann, C., Arnold, C., Gough, A., Li, B., & Heymans, C. (2022). The matter density PDF for modified gravity and dark energy with Large Deviations Theory. Monthly Notices of the Royal Astronomical Society, 513(2), 1623-1641. https://doi.org/10.1093/mnras/stac904

We present an analytical description of the probability distribution function (PDF) of the smoothed 3D matter density field for modified gravity and dark energy. Our approach, based on the principles of Large Deviations Theory, is applicable to gener... Read More about The matter density PDF for modified gravity and dark energy with Large Deviations Theory.

Fast full N-body simulations of generic modified gravity: derivative coupling models (2022)
Journal Article
Hernández-Aguayo, C., Ruan, C.-Z., Li, B., Arnold, C., Baugh, C. M., Klypin, A., & Prada, F. (2022). Fast full N-body simulations of generic modified gravity: derivative coupling models. Journal of Cosmology and Astroparticle Physics, 2022, Article 048. https://doi.org/10.1088/1475-7516/2022/01/048

We present mg-glam, a code developed for the very fast production of full N-body cosmological simulations in modified gravity (MG) models. We describe the implementation, numerical tests and first results of a large suite of cosmological simulations... Read More about Fast full N-body simulations of generic modified gravity: derivative coupling models.