Results 11 to 20 of about 431,408 (282)
The Density Parity Model for the Evolution of the Subhalo Inner Spin Alignments with the Cosmic Web
The Astrophysical Journal, 2023 We develop a new model within which the radius-dependent transition of the subhalo inner spins with respect to the cosmic web and the variation of the transition threshold radius ( r _th ) with subhalo mass ( M _vir ), smoothing scale ( r _f ), and ...
Jun-Sung Moon, Jounghun Lee
doaj +1 more source
The Astrophysical Journal, 2023 We construct accurate emulators for the projected and redshift space galaxy correlation functions and excess surface density as measured by galaxy–galaxy lensing, based on halo occupation distribution modeling.
Juliana Kwan +9 more
doaj +1 more source
The Galaxy Number Density Profile of Halos
The Astrophysical Journal, 2023 More precise measurements of galaxy clustering will be provided by the next generation of galaxy surveys, such as DESI, WALLABY, and the Square Kilometre Array.
Fei Qin +3 more
doaj +1 more source
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
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
doaj +1 more source
The Galaxy–Halo Connection of DESI Luminous Red Galaxies with Subhalo Abundance Matching
The Astrophysical Journal, 2023 We use subhalo abundance and age distribution matching to create magnitude-limited mock galaxy catalogs at z ∼ 0.43, 0.52, and 0.63 with z -band and 3.4 μ m W 1-band absolute magnitudes and r − z and r − W 1 colors. From these magnitude-limited mocks, we
Angela M. Berti +2 more
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
core +2 more sources
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
doaj +1 more source
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
doaj +1 more source
, 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
core +3 more sources