We investigate whether photon ring observations in black hole imaging are able to
distinguish between the Kerr black hole in general relativity and alternative black holes that …

We consider the optical appearance under a thin accretion disk of a regular black hole with
a central de Sitter core implementing O (l 2/r 2) far corrections to the Schwarzschild black …

We show that the compactified extra dimension and the emergence of the island can provide
clues about quantum gravity because their combination can solve the deepest puzzles of …

We present the global solutions of low angular momentum, inviscid, advective accretion flow
around Kerr-Taub-NUT (KTN) black hole in presence and absence of shock waves. These …

To explore the possible clues for the extra dimension from the Event Horizon Telescope
(EHT) observations, we study the shadow of the rotating 5D black string in General Relativity …

We study gravitational lensing of neutrinos in a Kaluza-Klein black hole spacetime and
compare the oscillation probabilities of neutrinos with the case of lensing by black holes in …

An alternative theory of gravity that has attracted much attention recently is the novel four-
dimensional Einstein-Gauss-Bonnet (4D EGB) gravity. The theory is rescaled by the Gauss …

Dalam studi ini, telah ditelaah kembali persamaan medan Einstein yang efektif untuk ruang-
waktu 5D dalam teori Kaluza Klein. Teori Kaluza-Klein merupakan teori yang …