Aether Tomography: Residual Cosmic Birefringence as a Probe of Organized Five-Dimensional Chronogeometric Structure

Aether Tomography: Residual Cosmic Birefringence as a Probe of Organized Five-Dimensional Chronogeometric Structure This paper is Paper 2 in the Temporal Torque Memory and Aether Organization series. It develops Aether tomography as an observational framework for interpreting residual cosmic birefringence maps as projections of organized five-dimensional chronogeometric structure. Paper 1 established the five-dimensional chronogeometric coordinate system, \[(x,y,z,τ_v,τ_t),\] and proposed that cosmic birefringence contains a universal topological component, \[β_0 = 1/16π^2.\] The present paper extends that framework by treating the residual birefringence field, \[δβ(θ,φ),\] as an observable projection of hidden temporal-torque organization within the Aether. The total birefringence field is written as \[β(θ,φ) = β_0 + δβ(θ,φ).\] Aether tomography is defined as the inverse problem, \[δβ(θ,φ) Ω_t(x),\] where Ωₜ(x) denotes temporal-torque density. The paper develops forward modeling, inverse reconstruction, harmonic decomposition, candidate QMU-native definitions of Ωₜ, simulated residual sky-map structures, and observational tests using Planck, ACT DR6, LiteBIRD, and future polarization surveys. A phenomenological forward model is introduced, \[δβ(θ,φ) = κ ∫LOS Ω_t(x) , ds,\] where (κ) is treated as an observational coupling coefficient whose QMU-native origin is reserved for future derivation. The paper also introduces harmonic observables, \[δβ(θ,φ) = ∑,m aₘ Yₘ(θ,φ),\] and a handedness statistic, \[H = ∑_m m |aₘ|^2,\] as falsifiable tests for chronotorsional asymmetry. This work establishes residual cosmic birefringence not merely as a signal to be detected, but as a potential tomographic map of organized Aether domains.