Results 31 to 40 of about 19,926 (182)
Shock-heated Gas in the Large-Scale Structure of the Universe [PDF]
, 2004 Cosmological shock waves are a ubiquitous consequence of cosmic structure formation. They play a major role in heating baryonic gas in the large-scale structure of the universe. In this contribution we study the shock-heated gas in connection with shocks
Hyesung Kang, D. Ryu, R. Cen, D. Song
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The Large-Scale Structure of the Universe [PDF]
, 2013 Galaxies are not uniformly distributed in space. On large scales the Universe displays coherent structure, with galaxies residing in groups and clusters on scales of ~1-3 Mpc/h, which lie at the intersections of long filaments of galaxies that are >10 Mpc/h in length.
openaire +2 more sources
SYSTEMATIC EFFECTS ON THE GENUS TOPOLOGY OF THE LARGE-SCALE STRUCTURE OF THE UNIVERSE [PDF]
, 2014 The large-scale structure of the universe is a useful cosmological probe of 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 ...
Young-Rae kIM +6 more
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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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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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Symmetries and consistency relations in the large scale structure of the universe [PDF]
, 2013 We study the symmetries enjoyed by the Newtonian equations of motion of the non-relativistic dark matter fluid coupled to gravity which give rise to the phenomenon of gravitational instability.
A. Kehagias, A. Riotto
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Cosmic voids and the kinetic analysis
Astronomy & AstrophysicsWe study the appearance and specific properties of the structures in the local Universe by means of the Vlasov kinetic technique. We consider the role of the cosmological constant in local structure formation via the theorem on the general function that ...
Gurzadyan V. G. +2 more
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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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Bootstrapping Lagrangian perturbation theory for the large scale structure [PDF]
Journal of Cosmology and Astroparticle PhysicsWe develop a model-independent approach to Lagrangian perturbation theory for the large scale structure of the universe. We focus on the displacement field for dark matter particles, and derive its most general structure without assuming a specific form ...
M. Marinucci +2 more
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Weak-lensing by the large scale structure in a spatially anisotropic universe: theory and predictions [PDF]
, 2015 This article details the computation of the two-point correlators of the convergence, E- and Bmodes of the cosmic shear induced by the weak-lensing by large scale structure assuming that the background spacetime is spatially homogeneous and anisotropic ...
C. Pitrou, T. S. Pereira, J. Uzan
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