We discuss spherical needlets and their properties. Needlets are a form of spherical wavelets which do not rely on any kind of tangent plane approximation and enjoy good localization properties in both pixel and harmonic space; moreover needlet coefficients are asymptotically uncorrelated at any fixed angular distance, which makes their use in statistical procedures very promising. In view of these properties, we believe needlets may turn out to be especially useful in the analysis of cosmic microwave background (CMB) data on the incomplete sky, as well as of other cosmological observations. As a final advantage, we stress that the implementation of needlets is computationally very convenient and may rely completely on standard data analysis packages such as HEALPix.

Marinucci, D., Pietrobon, D., Balbi, A., Baldi, P., Cabella, P., Kerkyacharian, G., et al. (2008). Spherical needlets for cosmic microwave background data analysis. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 383, 539-545 [10.1111/j.1365-2966.2007.12550.x].

Spherical needlets for cosmic microwave background data analysis

MARINUCCI, DOMENICO;BALBI, AMEDEO;BALDI, PAOLO;CABELLA, PAOLO;NATOLI, PAOLO;VITTORIO, NICOLA
2008

Abstract

We discuss spherical needlets and their properties. Needlets are a form of spherical wavelets which do not rely on any kind of tangent plane approximation and enjoy good localization properties in both pixel and harmonic space; moreover needlet coefficients are asymptotically uncorrelated at any fixed angular distance, which makes their use in statistical procedures very promising. In view of these properties, we believe needlets may turn out to be especially useful in the analysis of cosmic microwave background (CMB) data on the incomplete sky, as well as of other cosmological observations. As a final advantage, we stress that the implementation of needlets is computationally very convenient and may rely completely on standard data analysis packages such as HEALPix.
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore FIS/05 - Astronomia e Astrofisica
English
Con Impact Factor ISI
methods: data analysis , cosmic microwave background , cosmology: observations
Marinucci, D., Pietrobon, D., Balbi, A., Baldi, P., Cabella, P., Kerkyacharian, G., et al. (2008). Spherical needlets for cosmic microwave background data analysis. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 383, 539-545 [10.1111/j.1365-2966.2007.12550.x].
Marinucci, D; Pietrobon, D; Balbi, A; Baldi, P; Cabella, P; Kerkyacharian, G; Natoli, P; Picard, D; Vittorio, N
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/27748
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