2019/04/30 by Honghui Liu, H. Liu, Askar B. Abdikamalov +6 · 1 citation
Earth and Planetary Sciences · Physics and Astronomy · #Algorithm #Astronomy #Astrophysical Phenomena and Observations #Astrophysics #Computer science #General relativity #High-pressure geophysics and materials #Optics #Physics #Pulsars and Gravitational Waves Research #Reflection (computer programming) #Spectroscopy #State (computer science) #Theoretical physics #Theory of relativity #X-ray spectroscopy #astro-ph.HE #gr-qc
paper · pdf · doi:10.1103/physrevd.99.123007
published as Phys. Rev. D 99, 123007 (2019) · 15 pages, 8 figures. v2: refereed version
openalex created_date 2019/04/25 · arxiv created 2019/06/11 · openalex publication_date 2019/06/11 · arxiv updated 2019/06/12 · openalex updated_date 2026/08/05
We continue exploring the constraining capabilities of x-ray reflection spectroscopy to test the Kerr-nature of astrophysical black holes, and we present the results of our analysis of two NuSTAR observations of Cygnus X-1 in the soft state. We find that the final measurement can strongly depend on the assumption of the intensity profile. We conclude that Cygnus X-1 is not suitable for tests of general relativity using x-ray reflection spectroscopy, and we discuss the desired properties of a source to be a good candidate for our studies.