Results 11 to 20 of about 2,250,218 (355)
Formation of Galaxy Clusters [PDF]
Annual Review of Astronomy and Astrophysics, 2012 Formation of galaxy clusters corresponds to the collapse of the largest gravitationally bound overdensities in the initial density field and is accompanied by the most energetic phenomena since the Big Bang and by the complex interplay between gravity-induced dynamics of collapse and baryonic processes associated with galaxy formation. Galaxy clusters
Andrey Kravtsov, Stefano Borgani
exaly +6 more sources
The FLAMINGO project: cosmological hydrodynamical simulations for large-scale structure and galaxy cluster surveys [PDF]
Monthly notices of the Royal Astronomical Society, 2023 We introduce the Virgo Consortium’s FLAMINGO suite of hydrodynamical simulations for cosmology and galaxy cluster physics. To ensure the simulations are sufficiently realistic for studies of large-scale structure, the subgrid prescriptions for stellar ...
J. Schaye +19 more
semanticscholar +1 more source
Cosmological implications of the anisotropy of ten galaxy cluster scaling relations [PDF]
Astronomy & Astrophysics, 2021 The hypothesis that the late Universe is isotropic and homogeneous is adopted by most cosmological studies, including studies of galaxy clusters. The cosmic expansion rate H0 is thought to be spatially constant, while bulk flows are often presumed to be ...
K. Migkas +7 more
semanticscholar +1 more source
Probing cosmic isotropy with a new X-ray galaxy cluster sample through the LX–T scaling relation [PDF]
Astronomy & Astrophysics, 2020 The isotropy of the late Universe and consequently of the X-ray galaxy cluster scaling relations is an assumption greatly used in astronomy. However, within the last decade, many studies have reported deviations from isotropy when using various ...
K. Migkas +5 more
semanticscholar +1 more source
Spectroscopic confirmation of a mature galaxy cluster at a redshift of 2 [PDF]
Nature, 2020 Galaxy clusters are the most massive virialized structures in the Universe and are formed through the gravitational accretion of matter over cosmic time1. The discovery2 of an evolved galaxy cluster at redshift z = 2, corresponding to a look-back time of
J. Willis +9 more
semanticscholar +1 more source
On the Alignment of Galaxies in Clusters [PDF]
Astrophysics, 2020 9 paginas,1 figure, and 7 tables. Accepted in Astrophysics.
Juan Pablo Torres-Papaqui +1 more
openaire +5 more sources
The Galaxy Cluster Mass Scale and Its Impact on Cosmological Constraints from the Cluster Population [PDF]
Space Science Reviews, 2019 The total mass of a galaxy cluster is one of its most fundamental properties. Together with the redshift, the mass links observation and theory, allowing us to use the cluster population to test models of structure formation and to constrain cosmological
G. Pratt +7 more
semanticscholar +1 more source
THE ORIENTATION OF GALAXIES IN GALAXY CLUSTERS [PDF]
The Astrophysical Journal, 2010 We present an analysis of the spatial orientations of galaxies in the 247 optically selected rich Abell clusters, having in the considered area at least 100 members. We investigated the relation between angles giving information about galaxy angular momenta and the number of members in each structure.
Piotr Flin +3 more
openaire +3 more sources
Cluster-counterpart Voids: Void Identification from Galaxy Density Field
The Astrophysical Journal, 2023 We identify cosmic voids from galaxy density fields under the theory of void–cluster correspondence. We extend the previous novel void-identification method developed for the matter density field to the galaxy density field for practical applications ...
Junsup Shim +3 more
doaj +1 more source
Introducingromulusc: a cosmological simulation of a galaxy cluster with an unprecedented resolution [PDF]
Monthly notices of the Royal Astronomical Society, 2018 We present the first results from RomulusC, the highest resolution cosmological hydrodynamic simulation of a galaxy cluster run to date. RomulusC, a zoom-in simulation of a halo with $z=0$ mass $10^{14}$ M$_{\odot}$, is run with the same sub-grid physics
M. Tremmel +8 more
semanticscholar +1 more source