Improved foreground cleaning and a 1% sky mask reduce the significance of two CMB anomalies (low correlation, local-variance asymmetry) from about 3 sigma to about 2 sigma.
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Nearly Full-Sky Low-Multipole Cosmic Microwave Background Temperature Anisotropy: III. CMB Temperature Anomalies
Improved foreground cleaning and a 1% sky mask reduce the significance of two CMB anomalies (low correlation, local-variance asymmetry) from about 3 sigma to about 2 sigma.