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arXiv · 1011.1791

Improved Method for Detecting Local Discontinuities in CMB data by Finite Differencing

Jude Bowyer·Andrew H. Jaffe
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Abstract

An unexpected distribution of temperatures in the CMB could be a sign of new physics. In particular, the existence of cosmic defects could be indicated by temperature discontinuities via the Kaiser-Stebbins effect. In this paper, we show how performing finite differences on a CMB map, with the noise regularized in harmonic space, may expose such discontinuities, and we report the results of this process on the 7-year Wilkinson Microwave Anisotropy Probe data.

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Jude Bowyer, Andrew H. Jaffe. 2011-01-12. Improved Method for Detecting Local Discontinuities in CMB data by Finite Differencing. https://doi.org/10.1103/physrevd.83.023503

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