Removal of two large scale Cosmic Microwave Background anomalies after subtraction of the Integrated Sachs Wolfe effect

Understand

Though debated, the existence of claimed large-scale anomalies in the CMB is not totally dismissed.

• In parallel to the debate over their statistical significance, recent work focussed on masks and secondary anisotropies as potential sources of these anomalies.
• In this work we investigate simultaneously the impact of the method used to account for masked regions and the impact of the ISW effect, which is the large-scale secondary anisotropy most likely to affect the CMB anomalies.
• In this sense, our work is an update of both Francis & Peacock 2010 and Kim et al.