A k-nearest-neighbor cross-correlation of Planck CMB and 100 µm CIB maps detects a positive ISW/RS signal with template amplitude 0.95 ± 0.20 (4.8σ), though the model-independent null is only 2.3σ.
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Dynamical Test of Cosmic Acceleration: $k$-nearest Neighbor Cross Correlation of Cosmic Microwave Background and Cosmic Infrared Background
A k-nearest-neighbor cross-correlation of Planck CMB and 100 µm CIB maps detects a positive ISW/RS signal with template amplitude 0.95 ± 0.20 (4.8σ), though the model-independent null is only 2.3σ.