Speaker: Bridget Falck
Location: LSS 13 Conference, Ascona, Switzerland
The Indra suite of cosmological N-body simulations will provide excellent statistics of the large scale features in the distribution of dark matter while at the same time resolving the nonlinear evolution of structure, all within an unprecedented peta-scale database. Among other things, Indra will allow us to quantify the statistical uncertainties of large surveys and study the detailed evolution of the cosmic web. In this talk, I will first present an overview of the Indra simulations and the tools we are developing to manage a peta-byte of data. Then I will describe the ORIGAMI method of identifying structures (halos, filaments, walls, and voids) in simulations by finding folds in phase-space and contrast this with the standard approaches to halo-finding. I will also briefly discuss the possibility of distinguishing between dark energy and modified gravity models in the cosmic web.