On the amplification of magnetic fields in cosmic filaments and galaxy clusters [PDF]
, 2014 The amplification of primordial magnetic fields via a small-scale turbulent dynamo during structure formation might be able to explain the observed magnetic fields in galaxy clusters.
F. Vazza +3 more
semanticscholar +1 more source
Impact of filaments on galaxy cluster properties in The Three Hundred simulation [PDF]
EPJ Web of ConferencesGalaxy clusters and their filamentary outskirts reveal useful laboratories to test cosmological models and investigate Universe composition and evolution. Their environment, in particular the filaments of the Cosmic Web to which they are connected, plays
Santoni S. +4 more
doaj +1 more source
ODIN: Where Do Lyα Blobs Live? Contextualizing Blob Environments within Large-scale Structure
The Astrophysical Journal, 2023 While many Ly α blobs (LABs) are found in and around several well-known protoclusters at high redshift, how they trace the underlying large-scale structure is still poorly understood. In this work, we utilize 5352 Ly α emitters (LAEs) and 129 LABs at z =
Vandana Ramakrishnan +18 more
doaj +1 more source
On the Formation of cD Galaxies and their Parent Clusters [PDF]
MNRAS 427 (2012), p. 2047-2056, 2012 In order to study the mechanism of formation of cD galaxies we search for possible dependencies between the K-band luminosity of cDs and the parameters of their host clusters which we select to have a dominant cD galaxy, corresponding to a cluster morphology of Bautz-Morgan (BM) type I.
arxiv +1 more source
COOLING TIME, FREEFALL TIME, AND PRECIPITATION IN THE CORES OF ACCEPT GALAXY CLUSTERS [PDF]
, 2014 Star formation in the universe's largest galaxies—the ones at the centers of galaxy clusters—depends critically on the thermodynamic state of their hot gaseous atmospheres.
G. Voit, M. Donahue
semanticscholar +1 more source
Analytical model for non-thermal pressure in galaxy clusters – III. Removing the hydrostatic mass bias [PDF]
, 2014 Non-thermal pressure in galaxy clusters leads to underestimation of the mass of galaxy clusters based on hydrostatic equilibrium with thermal gas pressure.
Xun Shi, E. Komatsu
semanticscholar +1 more source
Gas Loss in Simulated Galaxies as They Fall into Clusters [PDF]
, 2014 We use high-resolution cosmological hydrodynamic galaxy formation simulations to gain insights on how galaxies lose their cold gas at low redshift as they migrate from the field to the high density regions of clusters of galaxies. We find that beyond three cluster virial radii, the fraction of gas-rich galaxies is constant, representing the field ...
arxiv +1 more source
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 +1 more source
The JWST PEARLS View of the El Gordo Galaxy Cluster and of the Structure It Magnifies
The Astrophysical Journal, 2023 The massive galaxy cluster El Gordo ( z = 0.87) imprints multitudes of gravitationally lensed arcs onto James Webb Space Telescope Near-Infrared Camera (NIRCam) images.
Brenda L. Frye +43 more
doaj +1 more source
Dependence of the bright end of galaxy luminosity function on cluster dynamical state [PDF]
, 2014 Luminosity function of cluster galaxies provides a fundamental constraint on galaxy evolution in cluster environments. By using the bright member galaxies of a large sample of rich clusters identified from Sloan Digital Sky Survey, we obtain the bright end of composite luminosity functions of cluster galaxies, and study their dependence on cluster ...
arxiv +1 more source