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Blueshifted lines from the inner accretion disc's rotation can explain quasar absorption "forests''
Amelia M. Hankla, Fergus J. E. Baker, Daniel R. Wilkins +1
Recent XRISM observations of active galactic nuclei such as PDS 456 have revealed ``forests'' of absorption lines best modeled by five distinct absorption zones with varying large…
Gradus.jl: spacetime-agnostic general relativistic ray-tracing for X-ray spectral modelling
Fergus J. E. Baker, Andrew J. Young
We introduce Gradus.jl, an open-source and publicly available general relativistic ray-tracing toolkit for spectral modelling in arbitrary spacetimes. Our software is written in th…
Modeling reflection spectra of super-Eddington X-ray sources
Swarnim Shashank, Askar B. Abdikamalov, Honghui Liu +5
Relativistic reflection is a common feature in the X-ray observations of accreting compact objects. We present reflux, a new X-ray reflection model for spectral analysis of super-E…