The cosmic infrared background (CIB) arises from integrated dust-emission of star-forming galaxies over cosmic time. Its angular fluctuations cross-correlate with galaxy surveys, weak lensing, X-ray and microwave backgrounds (Kashlinsky 2018; Maniyar 2021; Cooray 2012; Viero 2013). ΛCDM halo + star-formation models can broadly fit the cross-correlations but require tuned bias, redshift distributions, and SFE values; unexplained excess large-scale CIB power and strong coherence with other backgrounds hint at additional early source populations.
The standard model attributes the CIB to standard hierarchical-galaxy star-formation histories with feedback-regulated SFE. Excess large-scale power and coherence with other backgrounds demand higher-z galaxy populations or modified clustering, neither of which is parsimonious within minimal ΛCDM.
SCT replaces the hot-dense-center with a superluminal collision and the thermalized debris field. From this single change, the CIB-galaxy cross-correlation features come from in-cycle cascade-seeded star-formation plus dust production. Cascade-seeded SMBH (P46) accelerate in-cycle star formation and dust production in the cascade-seeded structure (P22, P25, P34, P36). The first stellar generations form rapidly on cascade-deposited high-density gas, producing dust and IR emission earlier than ΛCDM hierarchical-assembly allows.
Excess large-scale CIB power comes from the cascade-seeded gigaparsec-scale clustering of proto-galaxies along cascade-stream filaments (P34, P55), which exceeds the standard hierarchical-clustering signal at the largest scales. Coherence with other backgrounds (galaxy surveys, weak lensing, X-ray) reflects the shared cascade-seeded structure underlying all of them: galaxies + dust + AGN + lensing potential are all distributed along the same cascade-stream cosmic-web infrastructure.
Gravitational superposition (P50, P51, P52) gives the apparent dynamical-mass scaling that ties weak-lensing maps to the CIB without requiring exotic CDM. The same M1 framework that resolves the JWST early-galaxy mass crisis (recid 7, 108), the SMBH-seed problem (recid 109), the cosmic-noon star formation cliff (recid 121), and the broader cascade-seeded structure phenomenology accounts for the CIB cross-correlation features. There is no need for tuned bias, modified redshift distributions, or new source populations beyond cascade-seeded structure.
If precision Roman + Euclid + SPHEREx + CMB-S4 cross-correlation measurements find the CIB-galaxy coherence fully consistent with hierarchical-galaxy + standard-feedback predictions at the 5% level (no cascade-seeded large-scale-clustering signature), the M1 cascade-seeded explanation is refuted. The signature SCT prediction is the cross-correlation excess at large scales matching the cascade-stream cosmic-web infrastructure.