The famous Bullet Cluster spatial separation between gas + lensing mass is cited as direct evidence for collisionless dark matter. Beyond the primary offset, detailed analyses reveal subtle additional offsets, mass-distribution asymmetries, and small misalignments between lensing mass + galaxy positions that ΛCDM has difficulty explaining (Bradac 2006; Lage 2012). The fine-scale mass distribution shows complex substructure not predicted by simple collisionless-CDM merger simulations.
PARTIAL. Per Paper 13 Section 6.5(g), Bullet Cluster preliminary SCT estimate is 390 kpc offset vs observed 720 kpc (factor 1.8 short). Full SCT merger simulation (Bullet initial conditions, 512³ gas) pending to resolve whether the SCT force law increases or decreases the offset relative to ΛCDM. The Bullet-Cluster mass-offset is a known open task in SCT.
The standard model has Bullet Cluster mass-light offsets attributed to collisionless CDM passing through unimpeded while gas experiences ram pressure. The fine-scale asymmetries demand either complex multi-component CDM dynamics or fine-tuned merger geometries.
SCT replaces the hot-dense-center with a superluminal collision and the thermalized debris field. From this single change, the Bullet Cluster offset interpretation is reframed: there is no DM particle in SCT (P50, P51, P52, P54). Apparent mass distribution traced by lensing comes from gravitational superposition through the Φ_mesh contribution from baryonic + cosmic-web mesh structure, not from a collisionless particle population. The collision energy regime (P22, P23) supplies the cluster-progenitor cascade-thermodynamic state.
The observed gas-lensing offsets reflect merger dynamics where gas (subject to ram pressure) evolves differently from the inherited Φ_mesh contribution that lensing traces. The pre-merger cluster baryonic mass distribution + its associated Φ_mesh contribution is preserved through the merger more coherently than the gas because the Φ_mesh contribution is sourced by the broader cosmic-web context that the merger does not disturb.
The fine-scale offsets + asymmetries come from cascade-stream substructure inherited at deposition (P22, P25, P34), which gives the pre-merger cluster pair their cascade-deposited multi-component structure. After the merger, the Φ_mesh contribution preserves these cascade-substructure features as lensing-mass asymmetries. Pre-existing matter (P25) gives cluster diversity. Full SCT merger simulation (Paper 13 Section 6.5(g) open task) is required to quantitatively resolve the factor-1.8 discrepancy between SCT preliminary 390 kpc and observed 720 kpc offset. Cross-link to recid 196 broader gas-DM offset framework.
If full SCT merger simulation demonstrably fails to reproduce Bullet-Cluster + similar offset patterns at the 10% level (predicted offset more than 30% different from observed), the M6 no-DM-particle merger-dynamics explanation is refuted. The signature SCT prediction is the offset distribution emerging from baryonic + Φ_mesh dynamics rather than from collisionless-DM particle physics.