title: Effective Dark Matter Halo Catalog in f(R) Gravity.
abstract: We introduce the idea of an effective dark matter halo catalog in f(R) gravity, which is built using the effective density field. Using a suite of high resolution N-body simulations, we find that the dynamical properties of halos, such as the distribution of density, velocity dispersion, specific angular momentum and spin, in the effective catalog of f(R) gravity closely mimic those in the cold dark matter model with a cosmological constant (ΛCDM). Thus, when using effective halos, an f(R) model can be viewed as a ΛCDM model. This effective catalog therefore provides a convenient way for studying the baryonic physics, the galaxy halo occupation distribution and even semianalytical galaxy formation in f(R) cosmologies.
authors: INAF-Observatorio Astronomico, di Brera, Via Emilio Bianchi, 46, I-23807 Merate (LC), Italy.
authors: Jian-Hua
authors: JH
authors: He
authors: INAF-Observatorio Astronomico, di Brera, Via Emilio Bianchi, 46, I-23807 Merate (LC), Italy.
authors: Adam J
authors: AJ
authors: Hawken
authors: Department of Physics, Institute for Computational Cosmology, Durham University, Durham DH1 3LE, United Kingdom.
authors: Baojiu
authors: B
authors: Li
authors: INAF-Observatorio Astronomico, di Brera, Via Emilio Bianchi, 46, I-23807 Merate (LC), Italy.
authors: Luigi
authors: L
authors: Guzzo