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arXiv · 1908.10152

RELXILL_NK: A Black Hole Relativistic Reflection Model for Testing General Relativity

Askar B. Abdikamalov·Dimitry Ayzenberg·Cosimo Bambi·Sourabh Nampalliwar
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Abstract

In this paper, we briefly present RELXILL_NK, the first and currently only readily available model of the relativistic reflection spectrum of black hole accretion disks that includes non-Kerr solutions for the black hole spacetime, thus allowing for tests of the Kerr hypothesis and GR. RELXILL_NK makes use of a general relativistic ray-tracing code to calculate the relativistic effects of any well-behaved, stationary, axisymmetric, and asymptotically flat black hole spacetime, while the disk physics is handled through the non-relativistic X-ray reflection code XILLVER. A number of different flavors are available within RELXILL_NK; we summarize and compare these flavors using the Johannsen metric for the black hole spacetime.

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Askar B. Abdikamalov, Dimitry Ayzenberg, Cosimo Bambi, Sourabh Nampalliwar. 2019-08-27. RELXILL_NK: A Black Hole Relativistic Reflection Model for Testing General Relativity. https://doi.org/10.3390/proceedings2019017007

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