Spin Needlets Spectral Estimation

Details Spin Needlets Spectral Estimation Spin Needlets Spectral Estimation

2009-07-20

arxiv.org/abs/0907.3369v1

Electronic Journal of Statistics, Vol. 3, (2009), pp.1497-1530

Mathematics

Statistics Theory

Scientific paper

We consider the statistical analysis of random sections of a spin fibre bundle over the sphere. These may be thought of as random fields that at each point p in $S^2$ take as a value a curve (e.g. an ellipse) living in the tangent plane at that point $T_{p}S^2$, rather than a number as in ordinary situations. The analysis of such fields is strongly motivated by applications, for instance polarization experiments in Cosmology. To investigate such fields, spin needlets were recently introduced by Geller and Marinucci (2008) and Geller et al. (2008). We consider the use of spin needlets for spin angular power spectrum estimation, in the presence of noise and missing observations, and we provide Central Limit Theorem results, in the high frequency sense; we discuss also tests for bias and asymmetries with an asymptotic justification.

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