Investigating the X-ray polarization of lamp-post coronae in BHXRB

Abstract

High-sensitivity X-ray polarimetric observations of black hole X-ray binaries, which will soon become available with the launches of space-borne X-ray observatories with sensitive X-ray polarimeters, will be able to put independent constraints on the black hole as well as the accretion flow, and possibly break degeneracies that cannot be resolved by spectral/timing observations alone. In this work we perform a series of general relativistic Monte-Carlo radiative transfer simulations to study the expected polarization properties of X-ray radiation emerging from lamp-post coronae in black hole X-ray binaries. We find that the polarization degree of the coronal emission of black hole X-ray binaries is sensitive to the spin of the black hole, the height of the corona, and the dynamics of the corona.

arXiv commentAccepted for publication in MNRAS

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Cited by in corpus (3)

• X-ray polarization from accretion disk winds
• Reflection Spectra of Accretion Disks Illuminated by an Off-Axis Corona
• Possible Coronal Geometry in the Hard and Soft State of Black Hole X-ray Binaries from MONK Simulations