209 citations · 837 across the 12 of their papers we have counts for
12 papers
Shadow of a dressed black hole and determination of spin and viewing angle
Lingyun Yang, Zilong Li
Shadows of black holes surrounded by an optically thin emitting medium have been extensively discussed in the literature. The Hioki-Maeda algorithm is a simple recipe to characteri…
Shadows of CPR black holes and tests of the Kerr metric
M. Ghasemi-Nodehi, Zilong Li, Cosimo Bambi
We study the shadow of the Cardoso-Pani-Rico (CPR) black hole for different values of the black hole spin , the deformation parameters and , and the viewing ang…
Testing SgrA with the spectrum of its accretion structure
Nan Lin, Zilong Li, Jake Arthur +2
SgrA is the supermassive black hole candidate at the center of the Galaxy and an ideal laboratory to test general relativity. Following previous work by other authors, we use t…
X-ray spectropolarimetric measurements of the Kerr metric
Dan Liu, Zilong Li, Yifan Cheng +1
It is thought that the spacetime geometry around black hole candidates is described by the Kerr solution, but an observational confirmation is still missing. Today, the continuum-f…
Testing a class of non-Kerr metrics with hot spots orbiting SgrA
Dan Liu, Zilong Li, Cosimo Bambi
SgrA, the supermassive black hole candidate at the Galactic Center, exhibits flares in the X-ray, NIR, and sub-mm bands that may be interpreted within a hot spot model. Light c…
Distinguishing black holes and wormholes with orbiting hot spots
Zilong Li, Cosimo Bambi
The supermassive black hole candidates at the center of every normal galaxy might be wormholes created in the early Universe and connecting either two different regions of our Univ…
Constraints on the spacetime geometry around 10 stellar-mass black hole candidates from the disk's thermal spectrum
Lingyao Kong, Zilong Li, Cosimo Bambi
In a previous paper, one of us has described a code to compute the thermal spectrum of geometrically thin and optically thick accretion disks around generic stationary and axisymme…
Constraining the spin and the deformation parameters from the black hole shadow
Naoki Tsukamoto, Zilong Li, Cosimo Bambi
Within 5-10 years, very-long baseline interferometry (VLBI) facilities will be able to directly image the accretion flow around SgrA, the super-massive black hole candidate at…
Testing the nature of the supermassive black hole candidate in SgrA* with light curves and images of hot spots
Zilong Li, Lingyao Kong, Cosimo Bambi
General relativity makes clear predictions about the spacetime geometry around black holes. In the near future, new facilities will have the capability to explore the metric around…
Measuring the Kerr spin parameter of regular black holes from their shadow
Zilong Li, Cosimo Bambi
In a previous paper, one of us has showed that, at least in some cases, the Kerr-nature of astrophysical black hole candidates is extremely difficult to test and current techniques…
Destroying the event horizon of regular black holes
Zilong Li, Cosimo Bambi
Recently, several authors have studied the possibility of overspinning or overcharging an existing black hole to destroy its event horizon and make the central singularity naked. W…
Super-spinning compact objects generated by thick accretion disks
Zilong Li, Cosimo Bambi
If astrophysical black hole candidates are the Kerr black holes predicted by General Relativity, the value of their spin parameter must be subject to the theoretical bound $|a_*| \…