Pulse Brain · Growing Health Evidence Index
Peer-reviewed

Sensitivity of the Fe Kα Compton shoulder to the geometry and variability of the X-ray illumination of cosmic objects

Hirokazu Odaka, Hiroki Yoneda, Tadayuki Takahashi, A. C. Fabian

Monthly Notices of the Royal Astronomical Society · 2016

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Summary

In an X-ray reflection spectrum, a tail-like spectral feature generated via Compton downscattering, known as a Compton shoulder (CS), appears at the low-energy side of the iron Kα line. Despite its great diagnostic potential, its use as a spectral probe of the reflector has been seriously limited due to observational difficulties and modelling complexities. We revisit the basic nature of the CS by systematic investigation into its dependence on spatial and temporal parameters. The calculations are performed by Monte Carlo simulations for sphere and slab geometries. The dependence is obtained in a two-dimensional space of column density and metal abundance, demonstrating that the CS solves parameter degeneration between them which was seen in conventional spectral analysis using photoelectr

Source type
Peer-reviewed study
DOI
10.1093/mnras/stw1764
Catalogue ID
BFmoakvhek-l3brtw
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