Open AccessMultiple X‐ray reflection from ionized slabs
Author(s) -
Ross R. R.,
Fabian A. C.,
Ballantyne D. R.
Publication year - 2002
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2002.05758.x
Subject(s) - physics , reflection (computer programming) , astrophysics , galaxy , spectral line , accretion (finance) , emission spectrum , accretion disc , ionization , radiation , line (geometry) , gravitation , ray tracing (physics) , x ray , absorption (acoustics) , slab , astronomy , optics , geometry , ion , mathematics , quantum mechanics , computer science , programming language , geophysics
Multiple reflection of X‐rays may be important when an accretion disc and its hot corona have a complicated geometry, or if returning radiation due to gravitational light bending is important, or in emission from a funnel such as proposed in some γ‐ray burst models. We simulate the effects of multiple reflection by modifying the boundary condition for an X‐ray illuminated slab. Multiple reflection makes the soft X‐ray spectrum steeper (softer) and strengthens broad emission and absorption features, especially the K‐shell features of iron. This may be important in explaining the spectra of sources such as the narrow‐line type 1 Seyfert galaxy 1H 0707 – 495.