The Indra Simulation Database

We present the Indra suite of cosmological N-body simulations and the design of its companion database. Indra consists of 512 different instances of a 1 Gpc/h-sided box, each with 5123 dark matter particles and the same input cosmology, enabling a characterization of very large-scale modes of the matter power spectrum with 1012 MSun particle mass and an excellent handle on cosmic variance. We discuss the database design for the particle data, consisting of the positions and velocities of each particle, and the FOF halos, with links to the particle data so that halo properties can be calculated within the database. Database Design