scholarly journals On the dynamical state of galaxy clusters: insights from cosmological simulations – II.

2016 ◽  
Vol 464 (2) ◽  
pp. 2502-2510 ◽  
Author(s):  
Weiguang Cui ◽  
Chris Power ◽  
Stefano Borgani ◽  
Alexander Knebe ◽  
Geraint F. Lewis ◽  
...  
Keyword(s):  
Galaxy Clusters ◽  
Cosmological Simulations ◽  
Dynamical State

Mass distribution and Dynamical State of Galaxy Clusters in the LZLS Sample

2006 ◽  
Vol 20 ◽  
pp. 269-270 ◽  
Author(s):  
L.E. Campusano ◽  
E.S. Cypriano ◽  
L. Jr. Sodré ◽  
J.-P. Kneib
Keyword(s):  
Galaxy Clusters ◽  
Mass Distribution ◽  
Dynamical State

scholarly journals Probing the dynamical state, baryon content, and multiphase nature of galaxy clusters with bright background QSOs

2018 ◽  
Vol 481 (3) ◽  
pp. 4111-4122 ◽  
Author(s):  
Chong Ge ◽  
Q Daniel Wang ◽  
Joseph N Burchett ◽  
Todd M Tripp ◽  
Ming Sun ◽  
...  
Keyword(s):  
Galaxy Clusters ◽  
Dynamical State ◽  
State Baryon

scholarly journals Cosmological simulations of galaxy clusters with feedback from active galactic nuclei: profiles and scaling relations

2014 ◽  
Vol 445 (2) ◽  
pp. 1774-1796 ◽  
Author(s):  
Simon R. Pike ◽  
Scott T. Kay ◽  
Richard D. A. Newton ◽  
Peter A. Thomas ◽  
Adrian Jenkins
Keyword(s):  
Active Galactic Nuclei ◽  
Galaxy Clusters ◽  
Galactic Nuclei ◽  
Scaling Relations ◽  
Cosmological Simulations

scholarly journals The Three Hundred project: shapes and radial alignment of satellite, infalling, and backsplash galaxies

2020 ◽  
Vol 495 (3) ◽  
pp. 3002-3013 ◽  
Author(s):  
Alexander Knebe ◽  
Matías Gámez-Marín ◽  
Frazer R Pearce ◽  
Weiguang Cui ◽  
Kai Hoffmann ◽  
...  
Keyword(s):  
Dark Matter ◽  
Galaxy Clusters ◽  
Galaxy Cluster ◽  
Cluster Radius ◽  
Dynamical State ◽  
The Galaxy ◽  
Radial Orbit ◽  
Galaxy Halo ◽  
Satellite Galaxies

ABSTRACT Using 324 numerically modelled galaxy clusters, we investigate the radial and galaxy–halo alignment of dark matter subhaloes and satellite galaxies orbiting within and around them. We find that radial alignment depends on distance to the centre of the galaxy cluster but appears independent of the dynamical state of the central host cluster. Furthermore, we cannot find a relation between radial alignment of the halo or galaxy shape with its own mass. We report that backsplash galaxies, i.e. objects that have already passed through the cluster radius but are now located in the outskirts, show a stronger radial alignment than infalling objects. We further find that there exists a population of well radially aligned objects passing very close to the central cluster’s centre that were found to be on highly radial orbit.

scholarly journals COSMOLOGICAL SIMULATIONS OF ISOTROPIC CONDUCTION IN GALAXY CLUSTERS

2013 ◽  
Vol 778 (2) ◽  
pp. 152 ◽  
Author(s):  
Britton Smith ◽  
Brian W. O'Shea ◽  
G. Mark Voit ◽  
David Ventimiglia ◽  
Samuel W. Skillman
Keyword(s):  
Galaxy Clusters ◽  
Cosmological Simulations

scholarly journals The dynamical state and mass–concentration relation of galaxy clusters

2012 ◽  
Vol 427 (2) ◽  
pp. 1322-1328 ◽  
Author(s):  
Aaron D. Ludlow ◽  
Julio F. Navarro ◽  
Ming Li ◽  
Raul E. Angulo ◽  
Michael Boylan-Kolchin ◽  
...  
Keyword(s):  
Galaxy Clusters ◽  
Mass Concentration ◽  
Dynamical State

scholarly journals Characterizing galaxy clusters by their gravitational potential: Systematics of cluster potential reconstruction

2020 ◽  
Vol 644 ◽  
pp. A126
Author(s):  
C. Tchernin ◽  
E. T. Lau ◽  
S. Stapelberg ◽  
D. Hug ◽  
M. Bartelmann
Keyword(s):  
Galaxy Clusters ◽  
Gravitational Potential ◽  
Pressure Support ◽  
Good Alternative ◽  
Mass Measurements ◽  
Cosmological Simulations ◽  
Promising Alternative ◽  
X Ray ◽  
Mass Bias ◽  
Millimeter Wavelengths

Context. Biases in mass measurements of galaxy clusters are one of the major limiting systematics in constraining cosmology with clusters. Aims. We aim to demonstrate that the systematics associated with cluster gravitational potentials are smaller than the hydrostatic mass bias and that cluster potentials could therefore be a good alternative to cluster masses in cosmological studies. Methods. Using cosmological simulations of galaxy clusters, we compute the biases in the hydrostatic mass (HE mass) and those in the gravitational potential, reconstructed from measurements at X-ray and millimeter wavelengths. In particular, we investigate the effects of the presence of substructures and of nonthermal pressure support on both the HE mass and the reconstructed potential. Results. We find that the bias in the reconstructed potential (6%) is less than that of the HE mass (13%) and that the scatter in the reconstructed potential decreases by ∼35% with respect to that in the HE mass. Conclusions. This study shows that characterizing galaxy clusters by their gravitational potential is a promising alternative to using cluster masses in cluster cosmology.

scholarly journals THE RELATION BETWEEN GAS DENSITY AND VELOCITY POWER SPECTRA IN GALAXY CLUSTERS: QUALITATIVE TREATMENT AND COSMOLOGICAL SIMULATIONS

2014 ◽  
Vol 788 (1) ◽  
pp. L13 ◽  
Author(s):  
I. Zhuravleva ◽  
E. M. Churazov ◽  
A. A. Schekochihin ◽  
E. T. Lau ◽  
D. Nagai ◽  
...  
Keyword(s):  
Galaxy Clusters ◽  
Power Spectra ◽  
Cosmological Simulations ◽  
Gas Density
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