Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Islam, Shafqat Ul"'
The scarcity of quantum gravity (QG) inspired rotating black holes limits the progress of testing QG through observational data, such as that from the Event Horizon Telescope (EHT). Recently, the EHT imaged the supermassive black hole Sgr A*, reveali
Externí odkaz:
http://arxiv.org/abs/2410.09198
The EHT observation revealed event horizon-scale images of the supermassive black holes Sgr A* and M87* and these results are consistent with the shadow of a Kerr black hole as predicted by general relativity. However, Kerr-like rotating black holes
Externí odkaz:
http://arxiv.org/abs/2410.05395
We examine and compare the gravitational lensing, in the strong field limit, for the spherically symmetric string-inspired Euler-Heisenberg black holes, characterized by additional parameters $Q^2$ and $\alpha-\beta$, representing magnetic charge and
Externí odkaz:
http://arxiv.org/abs/2405.06501
Exact solutions describing rotating black holes can provide significant opportunities for testing modified theories of gravity, which are motivated by the challenges posed by dark energy and dark matter. Starting with a spherical Kiselev black hole a
Externí odkaz:
http://arxiv.org/abs/2307.11611
We investigate gravitational lensing in the strong deflection regime by loop quantum gravity (LQG)-motivated rotating black hole (LMRBH) metrics with an additional parameter $l$ besides mass $M$ and rotation $a$. The LMRBH spacetimes are regular ever
Externí odkaz:
http://arxiv.org/abs/2305.04336
Publikováno v:
ApJ 943, 22 (2023)
A mathematically consistent rotating black hole model in loop quantum gravity (LQG) is yet lacking. The scarcity of rotating black hole solutions in LQG substantially hampers the development of testing LQG from observations, e.g., from the Event Hori
Externí odkaz:
http://arxiv.org/abs/2211.06653
With a semiclassical polymerization in the loop quantum gravity (LQG), the interior of Schwarzschild black holes provides a captivating single-horizon regular black hole spacetime. The shortage of rotating black hole models in loop quantum gravity (L
Externí odkaz:
http://arxiv.org/abs/2209.13562
Testing strong gravitational lensing effects by supermassive compact objects with regular spacetimes
Publikováno v:
ApJ 938, 104 (2022)
We compare and contrast gravitational lensing, in the strong-field limit, by photon sphere in spherically symmetric regular electrically charged (REC) black holes ($0b_E$). He
Externí odkaz:
http://arxiv.org/abs/2209.04240
Observation indicates that many nearby galaxies host supermassive central black holes. Modelling Bardeen models in four-dimensional Einstein-Gauss-Bonnet (4D EGB) gravity, with additional parameters $\tilde{\alpha}$ and charge $q$, as central black h
Externí odkaz:
http://arxiv.org/abs/2203.00957
Publikováno v:
In Annals of Physics November 2024 470