Locating bound structure in an accelerating universe

@article{Pearson2013LocatingBS,
  title={Locating bound structure in an accelerating universe},
  author={David W. Pearson and David J. Batuski},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2013},
  volume={436},
  pages={796-806}
}
Given the overwhelming evidence that the universe is currently undergoing an accelerated expansion, the question of what are the largest gravitationally bound structures remains. A couple of groups, Busha et al. 2003 (B03) and Dunner et al. 2006 (D06), have attempted to analytically define these limits, arriving at substantially different estimates due to differences in their assumptions about the velocities at the present epoch. In an effort to locate the largest bound structures in the… 

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References

SHOWING 1-10 OF 44 REFERENCES
The limits of bound structures in the accelerating Universe
According to the latest evidence, the Universe is entering an era of exponential expansion, where gravitationally bound structures will get disconnected from each other, forming isolated 'island
Redshift-space limits of bound structures
An exponentially expanding Universe, possibly governed by a cosmological constant, forces gravitationally bound structures to become more and more isolated, eventually becoming causally disconnected
The Shapley Supercluster. III. Collapse Dynamics and Mass of the Central Concentration
We present the first application of a spherical collapse model to a supercluster of galaxies. Positions and redshifts of ∼3000 galaxies in the Shapley supercluster (SSC) are used to define velocity
Structure and dynamics of the Shapley Supercluster Velocity catalogue, general morphology and mass
We present results of our wide-field redshift survey of galaxies in a 285 square degree region of the Shapley Supercluster (SSC), based on a set of 10 529 velocity measurements (including 1201 new
Future Evolution of Cosmic Structure in an Accelerating Universe
Current cosmological data indicate that our universe contains a substantial component of dark vacuum energy that is driving the cosmos to accelerate. We examine the immediate and longer term
The Dynamics of the Corona Borealis Supercluster
The dynamics of the Corona Borealis (Cor Bor) supercluster was studied on a sample of 1555 galaxies in the vicinity of the six Abell clusters (A2061, A2065, A2067, A2079, A2089, and A2092) which
The supergalactic plane redshift survey
Redshift measurements, about 1000 of which are new, are presented for 1314 galaxies in a survey toward the apex of the large-scale streaming flow for ellipticals. The velocity histogram shows that
The Aquarius Superclusters. I. Identification of Clusters and Superclusters
We study the distribution of galaxies and galaxy clusters in a 10° × 6° field in the Aquarius region. In addition to 63 clusters in the literature, we have found 39 new candidate clusters using a
Discovery of Extreme Examples of Superclustering in Aquarius
The results of spectroscopic observations of 46 R ≥ 1 clusters of galaxies from the Abell and Abell, Corwin, & Olowin (hereafter ACO) catalogs are presented. The observations were conducted at the
Probing the Distribution of Dark Matter in the A901/902 Supercluster with Weak Lensing
We present a weak-shear analysis of the A901/902 supercluster, composed of three rich clusters at z = 0.16. Using a deep R-band image from the 0.°5 × 0.°5 MPG/ESO Wide Field Imager together with
...
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