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- Title
Transformationally decoupling clustering and tracer bias.
- Authors
Neyrinck, Mark C.; Heavens, A. F.; Starck, J.-L.; Krone-Martins, A.
- Abstract
Gaussianizing transformations are used statistically in many non-cosmological fields, but in cosmology, we are only starting to apply them. Here I explain a strategy of analyzing the 1-point function (PDF) of a spatial field, together with the ‘essential’ clustering statistics of the Gaussianized field, which are invariant to a local transformation. In cosmology, if the tracer sampling is sufficient, this achieves two important goals. First, it can greatly multiply the Fisher information, which is negligible on nonlinear scales in the usual δ statistics. Second, it decouples clustering statistics from a local bias description for tracers such as galaxies.
- Publication
Proceedings of the International Astronomical Union, 2014, Vol 10, Issue S306, p251
- ISSN
1743-9213
- Publication type
Article
- DOI
10.1017/S1743921314013702