CMB Cold Spot in the Planck light
The Cold Spot is a statistically significant anomaly in the Cosmic Microwave Background (CMB) sky. In this work we assess whether a huge void or a cosmic texture could have produced such an anomaly through searching for their gravitational redshift (Rees-Sciama effect) and lensing signatures on the {\it Planck} CMB sky. In the flat sky approximation, we find the amplitudes for the corresponding templates for both candidates consistent with zero, leaving little room, according to {\it Planck}, for those structures as the main source of the Cold Spot anomaly.
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