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Quasars and large scale structure of the universe [PDF]
, 2008 The majority of bright distant quasars $(z {}^{>}_{\sim} 1)$ may form in massive mergers appearing in compact galaxy groups in/and young clusters. The expected tests are (i) large correlation signal for medium-$z$ QSOs $(1 < z < 2)$ and (ii) direct search for quasar groups (QGs) indicating positions of distant pre-superclusters which later ...
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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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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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Systematic Effects on the Genus Topology of Large Scale Structure of the Universe
, 2014 Large-scale structure of the universe is a useful cosmological probe of the primordial non-Gaussianity and the expansion history of the universe because its topology does not change with time in the linear regime in the standard paradigm of structure ...
Choi, Yun-Young +6 more
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The Astrophysical JournalLarge-scale structure (LSS) analysis in galaxy surveys is a powerful cosmological probe but is limited by tracer bias, which can obscure underlying information and weaken parameter constraints.
Zhujun Jiang +8 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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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
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Large-Scale Structure of the Universe and Cosmological Perturbation Theory [PDF]
, 2001 We review the formalism and applications of non-linear perturbation theory (PT) to understanding the large-scale structure of the Universe. We first discuss the dynamics of gravitational instability, from the linear to the non-linear regime.
Bernardeau, F +3 more
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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 ...
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Cross Correlation between the Thermal Sunyaev–Zeldovich Effect and the Integrated Sachs–Wolfe Effect
The Astrophysical Journal Supplement SeriesWe present a joint cosmological analysis of the power spectra measurement of the Planck Compton parameter and the integrated Sachs–Wolfe (ISW) maps. We detect the statistical correlation between the Planck thermal Sunyaev–Zeldovich (tSZ) map and ISW data
Ayodeji Ibitoye +7 more
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