The cosmic far-IR background (CFIRB) carries roughly half of the total extragalactic background light from galaxies (Hauser & Dwek 2001; Dole 2006; Lagache 2005; Béthermin 2017). Hints of excess far-IR intensity and clustering on some scales suggest additional very early dusty populations or revised dust/star-formation prescriptions are needed to match the observations.
The standard model attributes the CFIRB to standard hierarchical-galaxy star-formation histories with feedback-regulated SFE. Recovering the observed excess intensity and clustering demands new high-z dusty populations or modified dust prescriptions, 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 far-IR background excess comes from cascade-seeded high-z star formation (P22, P25, P46) plus dust from in-cycle stellar + AGN production (P25, P28). Cascade-seeded proto-galaxies at z > 7 (recid 7, 108) form stars and produce dust earlier than ΛCDM hierarchical-assembly allows, contributing to the FIRB at the higher-redshift end of the cosmic dust-emission history.
Cascade-seeded SMBH (P46) drive AGN-fueled dust production through accretion-driven heating in cascade-seeded proto-galactic structures. Pre-existing matter from prior cycles (P25, P28) supplies the gas + dust precursor inventory that fuels both stellar and AGN dust emission across cosmic time. Gravitational superposition (P50, P51, P52) gives the dynamics of dust-rich proto-galaxies through the Φ_mesh contribution from cosmic-web infrastructure.
The same M1 framework that resolves the JWST early-galaxy mass crisis (recid 7, 108), the JADES-GS-z14-0 oxygen abundance (recid 113), the SMBH-seed problem (recid 109), and the broader CIB-galaxy cross-correlation (recid 156) accounts for the FIRB excess. Cascade-seeded high-z dust populations naturally produce the observed excess without requiring fine-tuned hierarchical-galaxy modifications.
If precision JWST + ALMA + SPHEREx high-z dust surveys find the FIRB excess fully consistent with hierarchical-galaxy + standard-feedback dust-emission predictions at the 5% level (no cascade-seeded high-z dust signature), the M1 cascade-seeded explanation is refuted. The signature SCT prediction is dust emission from z > 7 cascade-seeded proto-galaxies matching the observed FIRB excess.