152 citations · 1.3k across the 50 of their papers we have counts for
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X-ray reflection spectroscopy with Kaluza-Klein black holes
Jiachen Zhu, Askar B. Abdikamalov, Dimitry Ayzenberg +6
Kaluza-Klein theory is a popular alternative theory of gravity, with both non-rotating and rotating black hole solutions known. This allows for the possibility that the theory coul…
Testing general relativity with the stellar-mass black hole in LMC X-1 using the continuum-fitting method
Ashutosh Tripathi, Menglei Zhou, Askar B. Abdikamalov +6
The iron line and the continuum-fitting methods are currently the two leading techniques for measuring black hole spins with electromagnetic radiation. They can be naturally extend…
Search for traversable wormholes in active galactic nuclei using X-ray data
Ashutosh Tripathi, Biao Zhou, Askar B. Abdikamalov +2
In a previous paper, one of us calculated iron K line profiles emitted from possible accretion disks around traversable wormholes as a first step to use X-ray reflection spectro…
Relativistic reflection spectra of super-spinning black holes
Biao Zhou, Ashutosh Tripathi, Askar B. Abdikamalov +4
We construct a relativistic reflection model in a non-Kerr spacetime in which, depending on the value of the deformation parameter of the metric, there are black hole solutions wit…
Testing general relativity with supermassive black holes using X-ray reflection spectroscopy
Askar B. Abdikamalov, Dimitry Ayzenberg, Cosimo Bambi +7
In this paper, we review our current efforts to test General Relativity in the strong field regime by studying the reflection spectrum of supermassive black holes. So far we have a…
Constraining the Johannsen deformation parameter with black hole X-ray data
Ashutosh Tripathi, Askar B. Abdikamalov, Dimitry Ayzenberg +2
We extend our previous work on tests of the Kerr black hole hypothesis using X-ray reflection spectroscopy and we infer observational constraints on the Johannsen deformation param…