Testing the Kerr hypothesis using x-ray reflection spectroscopy with NuSTAR data of Cygnus X-1 in the soft state

Liu H, Abdikamalov AB, Ayzenberg D, Bambi C, Dauser T, Garcia J, Nampalliwar S (2019)


Publication Type: Journal article

Publication year: 2019

Journal

Book Volume: 99

Journal Issue: 12

DOI: 10.1103/PhysRevD.99.123007

Abstract

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.

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APA:

Liu, H., Abdikamalov, A.B., Ayzenberg, D., Bambi, C., Dauser, T., Garcia, J., & Nampalliwar, S. (2019). Testing the Kerr hypothesis using x-ray reflection spectroscopy with NuSTAR data of Cygnus X-1 in the soft state. Physical Review D, 99(12). https://dx.doi.org/10.1103/PhysRevD.99.123007

MLA:

Liu, Honghui, et al. "Testing the Kerr hypothesis using x-ray reflection spectroscopy with NuSTAR data of Cygnus X-1 in the soft state." Physical Review D 99.12 (2019).

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