CMB Cold Spot in the Planck Light

The Cold Spot, with an unusually cold region surrounded by a hot ring, is statistically significant anomaly in the cosmic microwave background (CMB) sky. In this work we assess whether different sets of multiple subvoids based on 2dF-VST ATLAS Spot galaxy redshift survey or collapsing texture could have produced such through simultaneous search for their gravitational and lensing signatures Planck CMB temperature anisotropies. We use patches radii R = 10° 20° to account inner as well outer ring. As void model, explore two ?LTB templates characterized values model's free parameters, top-hat template. detect higher than expected amplitudes first sets, , lower . imprint are consistent zero all these subvoid models. estimated amplitude from measurement implies energy scale texture, parameterized be (7.6 ± 2.0) × 10?5, no detection trace. note that deviation unity inability some profiles reproduce ring indicate theoretical insufficiencies, either construction model assumed cosmological framework leading imprints structures.