Results 31 to 40 of about 431,408 (282)
The Astrophysical Journal Letters, 2023 We report the first constraints on the growth rate of the universe, f ( z ) σ _8 ( z ), with intrinsic alignments (IAs) of galaxies. We measure the galaxy density-intrinsic ellipticity cross-correlation and intrinsic ellipticity autocorrelation functions
Teppei Okumura, Atsushi Taruya
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Effects of Massive Neutrinos on the Large-Scale Structure of the Universe [PDF]
, 2011 Cosmological neutrinos strongly affect the evolution of the largest structures in the Universe, i.e. galaxies and galaxy clusters. We use large box-size full hydrodynamic simulations to investigate the non-linear effects that massive neutrinos have on ...
Carbone, Carmelita +4 more
core +3 more sources
The Aemulus Project. V. Cosmological Constraint from Small-scale Clustering of BOSS Galaxies
The Astrophysical Journal, 2023 We analyze clustering measurements of BOSS galaxies using a simulation-based emulator of two-point statistics. We focus on the monopole and quadrupole of the redshift-space correlation function, and the projected correlation function, at scales of 0.1 ...
Zhongxu Zhai +8 more
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Automated detection of filaments in the large scale structure of the universe
, 2010 We present a new method to identify large scale filaments and apply it to a cosmological simulation. Using positions of haloes above a given mass as node tracers, we look for filaments between them using the positions and masses of all the remaining dark-
Aragón-Calvo +47 more
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The Line-of-Sight Analysis of Spatial Distribution of Galaxies in the COSMOS2015 Catalogue
Universe, 2020 New observations of high-redshift objects are crucial for the improvement of the standard ΛCDM cosmological model and our understanding of the Universe.
Maxim Nikonov +4 more
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The Astrophysical Journal, 2023 The JWST early release data show unexpected high stellar mass densities of massive galaxies at 7 < z < 11. A high star formation efficiency is probably needed to explain this.
Yan Gong, Bin Yue, Ye Cao, Xuelei Chen
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Mapping the Large-Scale Structure of the Universe
Science, 2005 In a large scale view of the universe, galaxies are the basic unit of structure. A typical bright galaxy may contain 100 billion stars and span tens of thousands of light years, but the empty expanses between the galaxies are much larger still. Galaxies are not randomly distributed in space, but instead reside in groups and clusters, which are ...
openaire +2 more sources
Regularity of the Large-Scale Structure of the Universe [PDF]
Symposium - International Astronomical Union, 1999 The observed structure of the Universe is hierarchical. Galaxies and clusters of galaxies are concentrated within elongated filamentary chains of various richness. High-density regions of the Universe form superclusters consisting of one or several clusters of galaxies and chains of galaxies surrounding and joining clusters. The space between filaments
openaire +3 more sources
Holographic principle and large scale structure in the universe
, 2011 A reasonable representation of large scale structure, in a closed universe so large it's nearly flat, can be developed by extending the holographic principle and assuming the bits of information describing the distribution of matter density in the ...
Mongan, T. R.
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Observed Evidence for the Primordial Origin of Galaxy Sizes
The Astrophysical JournalWe present observational evidence supporting the scenario that the protogalactic angular momenta play an important role in molding the optical sizes of present galaxies. Analyzing the NASA-Sloan Atlas catalog in the redshift range of 0.02 ≤ z
Jun-Sung Moon, Jounghun Lee
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