All Outputs (10)

The imprint of f(R) gravity on weak gravitational lensing II: Information content in cosmic shear statistics (2016)
Journal Article
Shirasaki, M., Nishimichi, T., Li, B., & Higuchi, Y. (2017). The imprint of f(R) gravity on weak gravitational lensing II: Information content in cosmic shear statistics. Monthly Notices of the Royal Astronomical Society, 466(2), 2402-2417. https://doi.org/10.1093/mnras/stw3254

We investigate the information content of various cosmic shear statistics on the theory of gravity. Focusing on the Hu–Sawicki-type f(R) model, we perform a set of ray-tracing simulations and measure the convergence bispectrum, peak counts and Minkow... Read More about The imprint of f(R) gravity on weak gravitational lensing II: Information content in cosmic shear statistics.

Cluster abundance in chameleon f(R) gravity I: toward an accurate halo mass function prediction (2016)
Journal Article
Cataneo, M., Rapetti, D., Lombriser, L., & Li, B. (2016). Cluster abundance in chameleon f(R) gravity I: toward an accurate halo mass function prediction. Journal of Cosmology and Astroparticle Physics, 2016(12), Article 024. https://doi.org/10.1088/1475-7516/2016/12/024

We refine the mass and environment dependent spherical collapse model of chameleon f(R) gravity by calibrating a phenomenological correction inspired by the parameterized post-Friedmann framework against high-resolution N-body simulations. We employ... Read More about Cluster abundance in chameleon f(R) gravity I: toward an accurate halo mass function prediction.

Subhalo abundance matching in f(R) gravity (2016)
Journal Article
He, J., Li, B., & Baugh, C. M. (2016). Subhalo abundance matching in f(R) gravity. Physical Review Letters, 117(22), Article 221101. https://doi.org/10.1103/physrevlett.117.221101

Using the liminality N-body simulations of Shi et al., we present the first predictions for galaxy clustering in f(R) gravity using subhalo abundance matching. We find that, for a given galaxy density, even for an f(R) model with fR0=−10−6, for which... Read More about Subhalo abundance matching in f(R) gravity.

Substructure and galaxy formation in the Copernicus Complexio warm dark matter simulations (2016)
Journal Article
Bose, S., Hellwing, W., Frenk, C., Jenkins, A., Lovell, M., Helly, J., …Gao, L. (2017). Substructure and galaxy formation in the Copernicus Complexio warm dark matter simulations. Monthly Notices of the Royal Astronomical Society, 464(4), 4520-4533. https://doi.org/10.1093/mnras/stw2686

We use the Copernicus Complexio (coco) high-resolution N-body simulations to investigate differences in the properties of small-scale structures in the standard cold dark matter (CDM) model and in a model with a cutoff in the initial power spectrum o... Read More about Substructure and galaxy formation in the Copernicus Complexio warm dark matter simulations.

Can background cosmology hold the key for modified gravity tests? (2016)
Journal Article
Ceron-Hurtado, J., He, J., & Li, B. (2016). Can background cosmology hold the key for modified gravity tests?. Physical Review D, 94(6), Article 064052. https://doi.org/10.1103/physrevd.94.064052

Modified gravity theories are a popular alternative to dark energy as a possible explanation for the observed accelerating cosmic expansion, and their cosmological tests are currently an active research field. Studies in recent years have been increa... Read More about Can background cosmology hold the key for modified gravity tests?.

Constraining f(R) Gravity Theory Using Weak Lensing Peak Statistics from the Canada-France-Hawaii-Telescope Lensing Survey (2016)
Journal Article
Liu, X., Li, B., Zhao, G., Chiu, M., Fang, W., Pan, C., …Fan, Z. (2016). Constraining f(R) Gravity Theory Using Weak Lensing Peak Statistics from the Canada-France-Hawaii-Telescope Lensing Survey. Physical Review Letters, 117(5), Article 051101. https://doi.org/10.1103/physrevlett.117.051101

In this Letter, we report the observational constraints on the Hu-Sawicki f(R) theory derived from weak lensing peak abundances, which are closely related to the mass function of massive halos. In comparison with studies using optical or x-ray cluste... Read More about Constraining f(R) Gravity Theory Using Weak Lensing Peak Statistics from the Canada-France-Hawaii-Telescope Lensing Survey.

Accurate method of modeling cluster scaling relations in modified gravity (2016)
Journal Article
J.-h, H., & Li, B. (2016). Accurate method of modeling cluster scaling relations in modified gravity. Physical Review D, 93(12), Article 123512. https://doi.org/10.1103/physrevd.93.123512

We propose a new method to model cluster scaling relations in modified gravity. Using a suite of nonradiative hydrodynamical simulations, we show that the scaling relations of accumulated gas quantities, such as the Sunyaev-Zel’dovich effect (Compton... Read More about Accurate method of modeling cluster scaling relations in modified gravity.

RAY-RAMSES: a code for ray tracing on the fly in N-body simulations (2016)
Journal Article
Barreira, A., Llinares, C., Bose, S., & Li, B. (2016). RAY-RAMSES: a code for ray tracing on the fly in N-body simulations. Journal of Cosmology and Astroparticle Physics, 2016(05), Article 001. https://doi.org/10.1088/1475-7516/2016/05/001

We present a ray tracing code to compute integrated cosmological observables on the fly in AMR N-body simulations. Unlike conventional ray tracing techniques, our code takes full advantage of the time and spatial resolution attained by the N-body sim... Read More about RAY-RAMSES: a code for ray tracing on the fly in N-body simulations.

Probing theories of gravity with phase space-inferred potentials of galaxy clusters (2016)
Journal Article
Stark, A., Miller, C., Kern, N., Gifford, D., Zhao, G., Li, B., …Nichol, R. (2016). Probing theories of gravity with phase space-inferred potentials of galaxy clusters. Physical Review D, 93(8), Article 084036. https://doi.org/10.1103/physrevd.93.084036

Modified theories of gravity provide us with a unique opportunity to generate innovative tests of gravity. In Chameleon f(R) gravity, the gravitational potential differs from the weak-field limit of general relativity (GR) in a mass dependent way. We... Read More about Probing theories of gravity with phase space-inferred potentials of galaxy clusters.

The Distribution of Dark and Luminous Matter in the Unique Galaxy Cluster Merger Abell 2146 (2016)
Journal Article
King, L., Clowe, D., Coleman, J., Russell, H., Santana, R., White, J., …McNamara, B. (2016). The Distribution of Dark and Luminous Matter in the Unique Galaxy Cluster Merger Abell 2146. Monthly Notices of the Royal Astronomical Society, 459(1), 517-527. https://doi.org/10.1093/mnras/stw507

Abell 2146 (z = 0.232) consists of two galaxy clusters undergoing a major merger. The system was discovered in previous work, where two large shock fronts were detected using the Chandra X-ray Observatory, consistent with a merger close to the plane... Read More about The Distribution of Dark and Luminous Matter in the Unique Galaxy Cluster Merger Abell 2146.