Results 11 to 20 of about 432,825 (243)
Large Scale Structure of the Universe: Current Problems [PDF]
, 1999 The mean power spectrum of galaxies is compared with theoretical models. Possibilities to explain the observed power spectrum are discussed. Superclusters and voids form a quasi-regular lattice of mean cell size 120 Mpc; the main axis of the lattice is ...
Einasto, J.
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Reoriented Memory of Galaxy Spins for the Early Universe
The Astrophysical Journal, 2023 Galaxy spins are believed to retain the initially acquired tendency of being aligned with the intermediate principal axis of the linear tidal field, which disseminates the prospect of using them as a probe of early universe physics. This roseate prospect,
Jun-Sung Moon, Jounghun Lee
doaj +1 more source
Plasma Suppression of Large Scale Structure Formation in the Universe [PDF]
, 2007 We point out that during the reionization epoch of the cosmic history, the plasma collective effect among the ordinary matter would suppress the large scale structure formation.
Chen, Pisin, Lai, Kwang-Chang
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An Observed Transition of Galaxy Spins on Void Surfaces
The Astrophysical Journal Letters, 2023 In linear theory, the galaxy angular momentum vectors that originate from initial tidal interactions with surrounding matter distribution intrinsically develop perpendicular alignments with the directions of maximum matter compression, regardless of ...
Jounghun Lee, Jun-Sung Moon
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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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Consistency test of general relativity from large scale structure of the Universe [PDF]
, 2009 We construct a consistency test of General Relativity (GR) on cosmological scales. This test enables us to distinguish between the two alternatives to explain the late-time accelerated expansion of the universe, that is, dark energy models based on GR ...
+20 more
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Prospects for 21 cm Galaxy Cross-correlations with HERA and the Roman High-latitude Survey
The Astrophysical Journal, 2023 The cross-correlation between the 21 cm field and the galaxy distribution is a potential probe of the Epoch of Reionization (EoR). The 21 cm signal traces neutral gas in the intergalactic medium and, on large spatial scales, this should be anticorrelated
Paul La Plante +4 more
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, 2000 Catalogues of galaxies, clusters of galaxies and superclusters - sources of information to study the large-scale structure of the Universe are reviewed. The power spectrum of density perturbations, and the correlation function are discussed as principal ...
Einasto, Jaan
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Spurious Correlations between Galaxies and Multiepoch Image Stacks in the DESI Legacy Surveys
The Astrophysical Journal Supplement Series, 2023 A nonnegligible source of systematic bias in cosmological analyses of galaxy surveys is the on-sky modulation that is caused by foregrounds and variable image characteristics, such as observing conditions.
Edgar Eggert, Boris Leistedt
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Stellar-reddening-based Extinction Maps for Cosmological Applications
The Astrophysical Journal, 2023 Cosmological surveys must correct their observations for the reddening of extragalactic objects by Galactic dust. Existing dust maps, however, have been found to have spatial correlations with the large-scale structure of the Universe.
Nayantara Mudur +2 more
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