Results 1 to 10 of about 2,222,107 (275)
Gentle reenergization of electrons in merging galaxy clusters [PDF]
Sci Adv, 2017 Cosmic ray electrons reenergized in merging galaxy clusters: A phenomenon observed with low-frequency radio telescopes. Galaxy clusters are the most massive constituents of the large-scale structure of the universe.
F. de Gasperin +8 more
semanticscholar +2 more sources
Structures in Galaxy Clusters [PDF]
The Astrophysical Journal, 1993 The analysis of the presence of substructures in 16 well-sampled clusters of galaxies suggests a stimulating hypothesis: Clusters could be classified as unimodal or bimodal, on the basis of to the sub-clump distribution in the {\em 3-D} space of ...
Biviano, A. +6 more
core +6 more sources
Formation of Galaxy Clusters [PDF]
Annual Review of Astronomy and Astrophysics, 2012 In this review, we describe our current understanding of cluster formation: from the general picture of collapse from initial density fluctuations in an expanding Universe to detailed simulations of cluster formation including the effects of galaxy ...
Andrey V. Kravtsov +24 more
core +6 more sources
Detection of anti-correlation of hot and cold baryons in galaxy clusters [PDF]
Nature Communications, 2019 Galaxy clusters contain vast amount of dark matter and baryonic matter. Here the authors show the observational detection of the anti-correlation of gas mass and stellar mass observables in the most massive galaxy clusters, indicating such clusters ...
Arya Farahi +12 more
doaj +2 more sources
MEASUREMENT OF THE HALO BIAS FROM STACKED SHEAR PROFILES OF GALAXY CLUSTERS [PDF]
, 2014 We present observational evidence of the two-halo term in the stacked shear profile of a sample of ∼1200 optically selected galaxy clusters based on imaging data and the public shear catalog from the CFHTLenS. We find that the halo bias, a measure of the
G. Covone +3 more
semanticscholar +3 more sources
The Atacama Cosmology Telescope: A Catalog of >4000 Sunyaev–Zel’dovich Galaxy Clusters [PDF]
Astrophysical Journal Supplement Series, 2020 We present a catalog of 4195 optically confirmed Sunyaev–Zel’dovich (SZ) selected galaxy clusters detected with signal-to-noise ratio >4 in 13,211 deg2 of sky surveyed by the Atacama Cosmology Telescope (ACT). Cluster candidates were selected by applying
M. Hilton +148 more
semanticscholar +1 more source
An excess of small-scale gravitational lenses observed in galaxy clusters [PDF]
Science, 2020 Galaxy clusters contain more small-scale gravitational lenses than expected from cosmological simulations. Gravitational lenses in galaxy clusters The large mass of a galaxy cluster deflects light from background objects, a phenomenon known as ...
M. Meneghetti +15 more
semanticscholar +1 more source
The radial acceleration relation in galaxy clusters [PDF]
Monthly notices of the Royal Astronomical Society, 2020 Recently, the discovery of the radial acceleration relation (RAR) in galaxies has been regarded as an indirect support of alternative theories of gravity such as modified Newtonian dynamics (MOND) and modified gravity.
M. Chan, Antonino Del Popolo
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
Diffuse Radio Emission from Galaxy Clusters [PDF]
Space Science Reviews, 2019 In a growing number of galaxy clusters diffuse extended radio sources have been found. These sources are not directly associated with individual cluster galaxies.
R. V. Weeren +8 more
semanticscholar +1 more source