The cosmological constant derived via galaxy groups and clusters [PDF]
European Physical Journal C: Particles and Fields, 2019 The common nature of dark matter and dark energy is argued in Gurzadyan (Eur Phys J Plus 134:14, 2019) based on the approach that the cosmological constant $$\varLambda $$ Λ enters the weak-field General Relativity following from Newton theorem on the ...
V. G. Gurzadyan, A. Stepanian
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Velocity-dependent self-interacting dark matter from groups and clusters of galaxies [PDF]
Journal of Cosmology and Astroparticle Physics, 2021 We probe the self-interactions of dark matter with relaxed galaxy groups and clusters using observational data from strong and weak lensing and stellar kinematics.
Laura Sagunski +9 more
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Integrated HI emission in galaxy groups and clusters [PDF]
, 2017 The integrated HI emission from hierarchical structures such as groups and clusters of galaxies can be detected by FAST at intermediate redshifts. Here we propose to use FAST to study the evolution of the global HI content of clusters and groups over ...
Mei Ai +5 more
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Entropy Evolution in Galaxy Groups and Clusters: A Comparison of External and Internal Heating [PDF]
, 2001 The entropy in hot, X-ray-emitting gas in galaxy groups and clusters is a measure of past heating events, except for the entropy lost by radiation from denser regions.
Fabrizio Brighenti, William G. Mathews
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Kinematics of the diffuse intragroup and intracluster light in groups and clusters of galaxies in the local universe within 100 Mpc distance [PDF]
Frontiers in Astronomy and Space Sciences, 2022 Nearly all intragroup (IGL) and intracluster light (ICL) comes from stars that are not bound to any single galaxy but were formed in galaxies and later unbound from them.
Magda Arnaboldi, Ortwin Gerhard
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The radial structure of galaxy groups and clusters [PDF]
, 2003 Simple self-consistent models of galaxy groups and clusters are tested against the re-sults of high-resolutionadiabatic gasdynamicalsimulations.
Y. Ascasíbar +3 more
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Radial metal abundance profiles in the intra-cluster medium of cool-core galaxy clusters, groups, and ellipticals [PDF]
, 2017 The hot intra-cluster medium (ICM) permeating galaxy clusters and groups is not pristine, as it has been continuously enriched by metals synthesised in Type Ia (SNIa) and core-collapse (SNcc) supernovae since the major epoch of star formation (z similar ...
François Mernier +12 more
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Properties of Fossil Groups of Galaxies
Universe, 2021 We review the formation and evolution of fossil groups and clusters from both the theoretical and the observational points of view. In the optical band, these systems are dominated by the light of the central galaxy.
J. Alfonso L. Aguerri, Stefano Zarattini
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The Effect of Splashback on Weak Lensing Mass Estimates of Galaxy Clusters and Groups
The Open Journal of Astrophysics, 2023 The splashback radius of a dark matter halo, which corresponds to the first apocenter radius reached by infalling matter and substructures, has been detected around galaxy clusters using a multitude of observational methods, including weak lensing ...
Yuanyuan Zhang +5 more
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Lost but not forgotten: Intracluster light in galaxy groups and clusters [PDF]
, 2017 With Hubble Space Telescope imaging, we investigate the progenitor population and formation mechanisms of the intracluster light (ICL) for 23 galaxy groups and clusters ranging from 3$\times10^{13} 10^{11.6}$ M$_\odot$), while by 100 kpc this colour is ...
T. DeMaio +6 more
semanticscholar +1 more source