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Evolution of the Merger Induced Hydrostatic Mass Bias in Galaxy Clusters
Kaylea Nelson, Douglas H. Rudd, Laurie Shaw +1
In this work, we examine the effects of mergers on the hydrostatic mass estimate of galaxy clusters using high-resolution Eulerian cosmological simulations. We utilize merger trees…
The gas distribution in the outer regions of galaxy clusters
D. Eckert, F. Vazza, S. Ettori +7
We present the analysis of a local (z = 0.04 - 0.2) sample of 31 galaxy clusters with the aim of measuring the density of the X-ray emitting gas in cluster outskirts. We compare ou…
Deconstructing the kinetic SZ Power Spectrum
Laurie D. Shaw, Douglas H. Rudd, Daisuke Nagai
We present a detailed investigation of the impact of astrophysical processes on the shape and amplitude of the kinetic Sunyaev-Zel'dovich (kSZ) power spectrum from the post-reioniz…
Halo Contraction Effect in Hydrodynamic Simulations of Galaxy Formation
Oleg Y. Gnedin, Daniel Ceverino, Nickolay Y. Gnedin +5
The condensation of gas and stars in the inner regions of dark matter halos leads to a more concentrated dark matter distribution. While this effect is based on simple gravitationa…
The Halo Occupation Distribution of Active Galactic Nuclei
Suchetana Chatterjee, Colin DeGraf, Jonathan Richardson +3
Using a fully cosmological hydrodynamic simulation that self-consistently incorporates the growth and feedback of supermassive black holes and the physics of galaxy formation, we e…
Gas Clumping in the Outskirts of Lambda-CDM Clusters
Daisuke Nagai, Erwin Lau
Recent Suzaku X-ray observations revealed that the observed entropy profile of the intracluster medium (ICM) deviates significantly from the prediction of hydrodynamical simulation…
The Halo Occupation Distribution of Black Holes: Dependence on Mass
Colin DeGraf, Matthew Oborski, Tiziana Di Matteo +4
We investigate the halo occupation distribution (HOD) of black holes within a hydrodynamic cosmological simulation that directly follows black hole growth. Similar to the HOD of ga…
Modeling the Outskirts of Galaxy Clusters with Cosmological Simulations
Daisuke Nagai
We present cosmological simulations of galaxy clusters, with focus on the cluster outskirts. We show that large-scale cosmic accretion and mergers produce significant internal gas…