95 citations · 630 across the 24 of their papers we have counts for
7 papers · 1 filter
Shock and Splash: Gas and Dark Matter Halo Boundaries around LambdaCDM Galaxy Clusters
Han Aung, Daisuke Nagai, Erwin T. Lau
Recent advances in simulations and observations of galaxy clusters suggest that there exists a physical outer boundary of massive cluster-size dark matter haloes. In this work, we…
Measuring Cosmological Distances Using Cluster Edges as a Standard Ruler
Erika L. Wagoner, Eduardo Rozo, Han Aung +1
The line-of-sight velocity dispersion profile of galaxy clusters exhibits a "kink" corresponding to the spatial extent of orbiting galaxies. Because the spatial extent of a cluster…
Clusters Have Edges: The Projected Phase SpaceStructure of SDSS redMaPPer Clusters
Paxton Tomooka, Eduardo Rozo, Erika L. Wagoner +3
We study the distribution of line-of-sight velocities of galaxies in the vicinity of SDSS redMaPPer galaxy clusters. Based on their velocities, galaxies can be split into two categ…
The Phase Space Structure of Dark Matter Halos
Han Aung, Daisuke Nagai, Eduardo Rozo +1
The phase space structure of dark matter halos can be used to measure the mass of the halo, infer mass accretion rates, and probe the effects of modified gravity. Previous studies…
Ly Blobs from Cold Streams Undergoing Kelvin-Helmholtz Instabilities
Nir Mandelker, Frank C. van den Bosch, Daisuke Nagai +3
We present an analytic toy model for the radiation produced by the interaction between the cold streams thought to feed massive halos at high redshift and their hot CGM. We begin b…
Scatter in Sunyaev--Zel'dovich effect scaling relations explained by inter-cluster variance in mass accretion histories
Sheridan B. Green, Han Aung, Daisuke Nagai +1
X-ray and microwave cluster scaling relations are immensely valuable for cosmological analysis. However, their power is limited by astrophysical systematics that bias mass estimate…
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…