Module solver

Main PDE solver for the cosmological thermalization problem.

Key physics: energy injection → heats electrons (T_e > T_z) → Kompaneets source drives y-type distortion → DC/BR create photons to convert y → μ and approach Bose-Einstein equilibrium.

The Kompaneets equation is split into:

1. Conservative redistribution at T_e^eq (no net energy change)
2. Injection source ∝ (ρ_e - ρ_eq) that adds energy from injection

This ensures energy conservation: only injection adds energy.

References:

• Chluba & Sunyaev (2012), MNRAS 419, 1294

Structs

SolverBuilder

Fluent builder for ThermalizationSolver.

SolverConfig

Tunable solver parameters.

SolverDiagnostics

Diagnostic counters and extrema tracked during solver evolution.

SolverSnapshot

State of the photon distribution at a single redshift.

ThermalizationSolver

Full PDE solver for CMB spectral distortions.