We present an empirical relation between cluster core radius and X-ray luminosity that reduces LX–M scatter from 45. 3% to 16. 6%. Using 511 Planck–MCXC clusters, we quantify rc/r₅00 ∝ LX^-0. 387 and demonstrate that fixed-profile aperture corrections systematically bias luminosities when this geometric diversity is present. This repository contains: - paper. pdf – Preprint submitted to MNRAS Letters- code. zip – Complete analysis pipeline (Python), including catalogs and results The code reproduces all figures and statistics in the paper.
Jordan Smilovic (Thu,) studied this question.