152 citations · 2.4k across the 65 of their papers we have counts for
9 papers · 1 filter
Constraints on the spacetime metric around seven "bare" AGNs using X-ray reflection spectroscopy
Ashutosh Tripathi, Jinli Yan, Yuchan Yang +12
We present the study of a sample of seven "bare" active galactic nuclei (AGN) observed with Suzaku. We interpret the spectrum of these sources with a relativistic reflection compon…
A study of the strong gravity region of the black hole in GS 1354-645
Yerong Xu, Sourabh Nampalliwar, Askar B. Abdikamalov +5
It is thought that the spacetime metric around astrophysical black holes is well described by the Kerr solution of Einstein's gravity. However, a robust observational evidence of t…
Testing the Kerr nature of the supermassive black hole in Ark 564
Ashutosh Tripathi, Sourabh Nampalliwar, Askar B. Abdikamalov +3
Einstein's theory of general relativity has been extensively tested in weak gravitational fields, mainly with experiments in the Solar System and observations of radio pulsars, and…
Testing the Kerr metric with the iron line and the KRZ parametrization
Yueying Ni, Jiachen Jiang, Cosimo Bambi
The spacetime geometry around astrophysical black holes is supposed to be well approximated by the Kerr metric, but deviations from the Kerr solution are predicted in a number of s…
Testing the Kerr black hole hypothesis: comparison between the gravitational wave and the iron line approaches
Alejandro Cardenas-Avendano, Jiachen Jiang, Cosimo Bambi
The recent announcement of the detection of gravitational waves by the LIGO/Virgo collaboration has opened a new window to test the nature of astrophysical black holes. Konoplya &…
Testing the Kerr nature of black hole candidates using iron line reverberation mapping in the CPR framework
Jiachen Jiang, Cosimo Bambi, James F. Steiner
The iron K line commonly observed in the X-ray spectrum of black hole candidates is produced by X-ray fluorescence of the inner accretion disk. This line can potentially be quit…
Testing the no-hair theorem with the continuum-fitting and the iron line methods: a short review
Cosimo Bambi, Jiachen Jiang, James F. Steiner
The continuum-fitting and the iron line methods are leading techniques capable of probing the spacetime geometry around astrophysical black hole candidates and testing the no-hair…
Testing the Kerr Nature of Black Hole Candidates using Iron Line Spectra in the CPR Framework
Jiachen Jiang, Cosimo Bambi, James F. Steiner
The iron K line commonly observed in the X-ray spectrum of both stellar-mass and supermassive black hole candidates originates from X-ray fluorescence of the inner accretion dis…
Using iron line reverberation and spectroscopy to distinguish Kerr and non-Kerr black holes
Jiachen Jiang, Cosimo Bambi, James F. Steiner
The iron K line commonly observed in the X-ray spectrum of both stellar-mass and supermassive black hole candidates is produced by the illumination of a cold accretion disk by a…