84 citations · 393 across the 14 of their papers we have counts for
10 papers · 1 filter
Iterative mean-field approach to the spherical collapse of dark matter halos
Xun Shi
Gravitational collapse of dark matter overdensities leads to the formation of dark matter halos which embed galaxies and galaxy clusters. An intriguing feature of dark matter halos…
Dynamical heating of the X-ray emitting intracluster medium: the roles of merger shocks and turbulence dissipation
Xun Shi, Daisuke Nagai, Han Aung +1
The diffuse plasma inside clusters of galaxies has X-ray emitting temperatures of a few keV. The physical mechanisms that heat this intracluster medium (ICM) to such temperatures i…
Unveiling the Galaxy Cluster - Cosmic Web Connection with X-ray observations in the Next Decade
Stephen A. Walker, Daisuke Nagai, A. Simionescu +35
In recent years, the outskirts of galaxy clusters have emerged as one of the new frontiers and unique laboratories for studying the growth of large scale structure in the universe.…
Turbulence decay in the density-stratified intracluster medium
Xun Shi, Congyao Zhang
Turbulence evolution in a density-stratified medium differs from that of homogeneous isotropic turbulence described by the Kolmogorov picture. We evaluate the degree of this effect…
Multi-scale analysis of turbulence evolution in the density stratified intracluster medium
Xun Shi, Daisuke Nagai, Erwin Lau
The diffuse hot medium inside clusters of galaxies typically exhibits turbulent motions whose amplitude increases with radius, as revealed by cosmological hydrodynamical simulation…
Locations of Accretion Shocks around Galaxy Clusters and the ICM properties: insights from Self-Similar Spherical Collapse with arbitrary mass accretion rates
Xun Shi
Accretion shocks around galaxy clusters mark the position where the infalling diffuse gas is significantly slowed down, heated up, and becomes a part of the intracluster medium (IC…
The outer profile of dark matter halos: an analytical approach
Xun Shi
A steepening feature in the outer density profiles of dark matter halos indicating the splashback radius has drawn much attention recently. Possible observational detections have e…
Analytical model for non-thermal pressure in galaxy clusters - III. Removing the hydrostatic mass bias
Xun Shi, Eiichiro Komatsu, Daisuke Nagai +1
Non-thermal pressure in galaxy clusters leads to underestimation of the mass of galaxy clusters based on hydrostatic equilibrium with thermal gas pressure. This occurs even for dyn…
Analytical model for non-thermal pressure in galaxy clusters - II. Comparison with cosmological hydrodynamics simulation
Xun Shi, Eiichiro Komatsu, Kaylea Nelson +1
Turbulent gas motion inside galaxy clusters provides a non-negligible non-thermal pressure support to the intracluster gas. If not corrected, it leads to a systematic bias in the e…
Analytical model for non-thermal pressure in galaxy clusters
Xun Shi, Eiichiro Komatsu
Non-thermal pressure in the intracluster gas has been found ubiquitously in numerical simulations, and observed indirectly. In this paper we develop an analytical model for intracl…