DAO: A New and Public Non-Relativistic Reflection Model

DAO — X-ray Reflection Spectroscopy Model Disk-corona Atmosphere with Opacity DAO computes rest-frame X-ray reflection spectra from accretion-disc atmospheres in X-ray binaries and AGN. Its distinguishing feature is an **exact, angle- and energy-dependent Compton-redistribution kernel** — fully relativistic quantum-electrodynamic scattering, not the angle-averaged Gaussian or Fokker–Planck approximations used by other reflection codes. DAO couples **Cloudy** (C25) for atomic physics, a **custom Compton radiative-transfer solver** (cubic Bézier short-characteristics formal solution with Lambda iteration), and **HEASoft/Xspec** corona spectra. Author: Yimin Huang (Fudan University; University of Bristol) · [email protected]: 1.0.0 · MIT License

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