期刊
PHYSICAL REVIEW D
卷 99, 期 12, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.99.123007
关键词
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资金
- Innovation Program of the Shanghai Municipal Education Commission [2019-01-07-00-07-E00035]
- Fudan University [IDH1512060]
- Shanghai Government Scholarship (SGS)
- Alexander von Humboldt Foundation
- Excellence Initiative at Eberhard-Karls Universitat Tubingen
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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