R-PRED-DM1 — Prediction Interface for P-DM1

R-PRED-DM1 defines the prediction interface for P-DM1. It specifies: what quantities must be extracted from data, how they map onto the prediction, and what constitutes agreement or failure. R-PRED-DM1 is non-normative—it introduces no new predictions and no new theory. It does not add constraints to P-DM1; it may be revised without changing the prediction; it exists to ensure disciplined and reproducible testing.

Required Observables:

• Total halo mass $M_{\text{halo}}$
• Core radius $r_{\text{core}}$ (defined as radius over which density profile flattens to approximately constant central value)
• Enclosed mass profile within $r_{\text{core}}$

Interface Specification: Any reasonable, published core definition may be used provided it is applied uniformly. The interface does not mandate specific halo model (e.g., Burkert, ISO), but consistency must be demonstrated. Empirical results should be compared against P-DM1 prediction: $r_c \propto M^{1/2}$ and $\Sigma_0 \sim 100\,M_\odot\,\mathrm{pc}^{-2}$.

Paper ID: R-PRED-DM1 | Series: R-series (Reference) | Status: Reference document | Dependencies: Informed by P-DM1