119 citations · 544 across the 16 of their papers we have counts for
6 papers · 1 filter
Red Sequence Cluster Finding in the Millennium Simulation
J. D. Cohn, A. E. Evrard, M. White +2
We investigate halo mass selection properties of red-sequence cluster finders using galaxy populations of the Millennium Simulation (MS). A clear red sequence exists for MS galaxie…
Source Mergers and Bubble Growth During Reionization
J. D. Cohn, Tzu-Ching Chang
The recently introduced models of reionization bubbles based on extended Press-Schechter theory (Furlanetto, Zaldarriaga & Hernquist 2004) are generalized to include mergers of ion…
Likelihood Methods for Cluster Dark Energy Surveys
Wayne Hu, J. D. Cohn
Galaxy cluster counts at high redshift, binned into spatial pixels and binned into ranges in an observable proxy for mass, contain a wealth of information on both the dark energy e…
The Formation Histories of Galaxy Clusters
J. D. Cohn, Martin White
A sample of hundreds of simulated galaxy clusters is used to study the statistical properties of galaxy cluster formation. Individual assembly histories are discussed, the degree o…
The Effects of Massive Substructures on Image Multiplicities in Gravitati onal Lenses
J. D. Cohn, C. S. Kochanek
Surveys for gravitational lens systems have typically found a significantly larger fraction of lenses with four (or more) images than are predicted by standard ellipsoidal lens mod…
Open universes from bubbles: an introduction and update
J. D. Cohn
An introduction to models of open universes originating from bubbles, including a summary of recent theoretical results for the power spectrum. To appear in the proceedings of the…