Results 1 to 10 of about 2,267,963 (287)
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.
de Gasperin F +8 more
europepmc +3 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
A catalog of Nearby Poor Clusters of Galaxies [PDF]
, 1999 A catalog of 732 optically selected, nearby poor clusters of galaxies covering the entire sky north of $\rm -3^{\circ}$ declination is presented. The poor clusters, called WBL clusters, were identified as concentrations of 3 or more galaxies with ...
Bahcall J. N. +9 more
core +4 more sources
Measurement of the halo bias from stacked shear profiles of galaxy clusters [PDF]
, 2014 We present the observational evidence of the 2-halo term in the stacked shear profile of a sample of about 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
Cardone, Vincenzo F. +3 more
core +2 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
Galaxy Clusters Reconstruction
Journal of Physics: Conference Series, 2021 In the present work, we introduce a machine learning-based approach for galaxy clustering. It requires to determine clusters to provide further galaxies groups’ masses estimation.
A. Zarodnyuk +3 more
semanticscholar +1 more source
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
A radio ridge connecting two galaxy clusters in a filament of the cosmic web [PDF]
Science, 2019 A radio ridge between two galaxy clusters Galaxy clusters contain dozens or hundreds of galaxies, vast quantities of hot gas, and large amounts of dark matter.
F. Govoni +28 more
semanticscholar +1 more source