Embedding realistic surveys in simulations through volume remapping

Details Embedding realistic surveys in simulations through volume remapping Embedding realistic surveys in simulations through volume remapping

2010-03-16

arxiv.org/abs/1003.3178v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

4 pages, 4 figures. Companion material at http://mwhite.berkeley.edu/BoxRemap/

Scientific paper

Connecting cosmological simulations to real-world observational programs is often complicated by a mismatch in geometry: while surveys often cover highly irregular cosmological volumes, simulations are customarily performed in a periodic cube. We describe a technique to remap this cube into elongated box-like shapes that are more useful for many applications. The remappings are one-to-one, volume-preserving, keep local structures intact, and involve minimal computational overhead.

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