works on
active galactic nuclei 1column density variability 1spectral modeling 1torus structure 1x-ray absorption 1

From the 1 of 1 linked paper with an AI index.

collaborators

1 paper

astro-ph.GA2026

X-ray Absorption Variability in NGC 1142: Another Constraint on the Nature of the Torus/Broad-Line Region in Active Galactic Nuclei

Isaiah S. Cox, Núria Torres-AlbÃ, Stefano Marchesi +5

The paper analyzes nine X‑ray observations of the active galaxy NGC 1142 over ~20 years to study changes in line‑of‑sight column density, using torus models to infer the geometry a…