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• W2912783529 abstract "In this paper we address the problem of finding optimal cosmic shear tomographic bins. We generalise the definition of a cosmic shear tomographic bin to be a set of commonly labelled voxels in photometric colour space; rather than bins defined directly in redshift. We explore this approach by using a self-organising map to define the multi-dimensional colour space, and a we define a 'label space' of connected regions on the self-organising map using overlapping elliptical disks. This allows us to then find optimal labelling schemes by searching the label space. We use a metric that is the signal-to-noise ratio of a dark energy equation of state measurement, and in this case we find that for up to five tomographic bins the optimal colour-space labelling is an approximation of an equally-spaced binning in redshift; that is in all cases the best configuration. We also show that such a redefinition is more robust to photometric redshift outliers than a standard tomographic bin selection." @default.
• W2912783529 created "2019-02-21" @default.
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• W2912783529 date "2019-03-29" @default.
• W2912783529 modified "2023-10-01" @default.
• W2912783529 title "Rainbow cosmic shear: Optimization of tomographic bins" @default.
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• W2912783529 doi "https://doi.org/10.1103/physrevd.99.063536" @default.
• W2912783529 hasPublicationYear "2019" @default.
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