Results 21 to 30 of about 432,951 (281)
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
, 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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The Time Evolution of Mutual Information between Disjoint Regions in the Universe
Entropy, 2023 We study the time evolution of mutual information between mass distributions in spatially separated but casually connected regions in an expanding universe.
Biswajit Pandey
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Topological Defects and the Formation of Structure in the Universe [PDF]
, 1996 Topological defects, in particular cosmic strings, give rise to an interesting mechanism for generating the primordial perturbations in the early Universe which are required to explain the present structure. An overview of the cosmic string model will be
Brandenberger, Robert H.
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Machine-learning Cosmology from Void Properties
The Astrophysical Journal, 2023 Cosmic voids are the largest and most underdense structures in the Universe. Their properties have been shown to encode precious information about the laws and constituents of the Universe.
Bonny Y. Wang +3 more
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Galaxy Clusters: Cosmic High-Energy Laboratories to Study the Structure of Our Universe [PDF]
, 2001 This contribution illustrates the study of galaxy clusters as astrophysical laboratories as well as probes for the large-scale structure of the Universe.
Boehringer, Hans
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The Astrophysical Journal, 2023 We present CAMELS-ASTRID, the third suite of hydrodynamical simulations in the Cosmology and Astrophysics with MachinE Learning (CAMELS) project, along with new simulation sets that extend the model parameter space based on the previous frameworks of ...
Yueying Ni +14 more
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Large-scale Filamentary Structure around the Protocluster at Redshift z=3.1 [PDF]
, 2005 We report the discovery of a large-scale coherent filamentary structure of Lyman alpha emitters in a redshift space at z=3.1. We carried out spectroscopic observations to map the three dimensional structure of the belt-like feature of the Lyman alpha ...
Hajime Tamura +14 more
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