# GRAVITATIONAL REDSHIFTS IN SIMULATED GALAXY CLUSTERS

@article{kIM2004GRAVITATIONALRI,
title={GRAVITATIONAL REDSHIFTS IN SIMULATED GALAXY CLUSTERS},
author={Young-Rae kIM and Rupert Croft},
journal={The Astrophysical Journal},
year={2004},
volume={607},
pages={164-174}
}
• Published 2 February 2004
• Physics
• The Astrophysical Journal
We predict the amplitude of the gravitational redshift of galaxies in galaxy clusters using an N-body simulation of a ΛCDM universe. We examine the possibility of detecting the gravitational effect on the total redshift observed for galaxies. For clusters of mass M ~ 1015 h-1 M☉, the difference in gravitational redshift between the brightest galaxy and the rest of the cluster members is ~10 km s- 1. The most efficient way to detect gravitational redshifts using information from galaxies only…

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## References

SHOWING 1-10 OF 23 REFERENCES
Detecting the Gravitational Redshift of Cluster Gas.
• Physics, Medicine
The Astrophysical journal
• 2000
It is shown that the relative redshifts of different ionization states of metals in the ICM provide a unique probe of the three-dimensional matter distribution.
Clusters of galaxies : probes of cosmological structure and galaxy evolution
• Physics
• 2004
Introduction List of participants 1. Galaxy clusters as probes of cosmology and astrophysics August E. Evrard 2. Clusters of galaxies in the Sloan Digital Sky Survey Robert C. Nichol 3. Clustering
The APM cluster—galaxy cross-correlation function: constraints on Ω and galaxy bias
• Physics
• 1999
We estimate the cluster–galaxy cross-correlation function (ξcg), from the APM galaxy and galaxy cluster surveys. We obtain estimates both in real space from the inversion of projected statistics and
The Dark Matter Distribution in the Central Regions of Galaxy Clusters
• Physics
• 2003
Cosmological N-body simulations predict that dark matter halos should have a universal shape characterized by a steep, cuspy inner profile. Here we report on a spectroscopic study of six clusters
Galaxy groups in the 2dF Galaxy Redshift Survey: the catalogue
• Physics
• 2002
We construct a galaxy groups catalogue from the public 100-K data release of the 2dF Galaxy Redshift Survey. The group identification is carried out using a slightly modified version of the
A Universal Density Profile from Hierarchical Clustering
• Physics
• 1997
We use high-resolution N-body simulations to study the equilibrium density profiles of dark matter halos in hierarchically clustering universes. We find that all such profiles have the same shape,
Non-equilibrium motions in galaxies and gravitational redshift
• Physics
• 1993
We have attempted to detect non-equilibrium motions in the cores of elliptical galaxies by separating radial velocity profiles into their odd and even components, the latter being zero in equilibrium
FLAT-CORED DARK MATTER IN CUSPY CLUSTERS OF GALAXIES
• Physics
• 2003
Sand and coworkers have measured the central density profile of cluster MS 213723 with gravitational lensing and velocity dispersion and removed the stellar contribution with a reasonable M/L. The
The Amplitude of Mass Fluctuations
• Physics
• 2003
We determine the linear amplitude of mass fluctuations in the universe, σ8, from the abundance of massive clusters at redshifts z = 0.5-0.8. The evolution of massive clusters depends exponentially on
The ESO Nearby Abell Cluster Survey - V. The catalogue: Contents and instructions for use
• Physics
• 1998
We present the catalogue resulting from the ESO Nearby Abell Cluster Survey (the ENACS), which contains redshifts and magnitudes for 5634 galaxies in the directions of 107 rich, nearby southern Abell