The Effect of Returning Radiation on Relativistic Reflection
| Autor: | T Dauser, J A García, A Joyce, S Licklederer, R M T Connors, A Ingram, C S Reynolds, J Wilms |
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| Rok vydání: | 2022 |
| Předmět: |
High Energy Astrophysical Phenomena (astro-ph.HE)
Cosmology and Nongalactic Astrophysics (astro-ph.CO) Space and Planetary Science Astrophysics::High Energy Astrophysical Phenomena FOS: Physical sciences Astronomy and Astrophysics Astrophysics - High Energy Astrophysical Phenomena Astrophysics - Cosmology and Nongalactic Astrophysics |
| DOI: | 10.48550/arxiv.2206.07973 |
| Popis: | We study the effect of returning radiation on the shape of the X-ray reflection spectrum in the case of thin accretion disks. We show that the returning radiation mainly influences the observed reflection spectrum for a large black hole spin (a > 0.9) and a compact primary source of radiation close to the black hole at height h < 5 $r_\mathrm{g}$, and that it dominates the reflected flux for extreme values of spin and compactness. The main effect of the returning radiation is to increase the irradiating flux on to the outer parts of the accretion disk, leading to stronger reflection and a flatter overall emissivity profile. By analyzing simulated observations we show that neglecting returning radiation in existing studies of reflection dominated sources has likely resulted in overestimating the height of the corona above the black hole. An updated version of the publicly available relxill suite of relativistic reflection models which includes returning radiation is also presented. accepted for publication by MNRAS; the new RELXILL model can be downloaded at https://www.sternwarte.uni-erlangen.de/research/relxill/ including a new and detailed documentation (https://www.sternwarte.uni-erlangen.de/research/relxill/relxill_docu.pdf) |
| Databáze: | OpenAIRE |
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