Transformationally decoupling clustering and tracer bias
Transformationally decoupling clustering and tracer bias
复制标题
变革性地解耦聚类和示踪剂偏差
DOI:
10.1017/s1743921314013702
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发表时间:
2014
期刊:
影响因子:
--
通讯作者:
M. Neyrinck
中科院分区:
文献类型:
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作者:
M. Neyrinck
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.