Single-rotating five-dimensional near-horizon extremal geometry in general relativity

K Hajian - Physical Review D, 2024 - APS
The geometries with SL (2, R) and some axial U (1) isometries are called “near-horizon
extremal geometries” and are found usually, but not necessarily, in the near-horizon limit of …

Extremal vanishing horizon Kerr-AdS black holes at ultraspinning limit

SM Noorbakhsh, MH Vahidinia - Journal of High Energy Physics, 2018 - Springer
A bstract By utilizing the ultraspinning limit we generate a new class of extremal vanishing
horizon (EVH) black holes in odd dimensions (d≥ 5). Starting from the general multi …

Integrability of geodesics in near-horizon extremal geometries: Case of Myers-Perry black holes in arbitrary dimensions

H Demirchian, A Nersessian, S Sadeghian… - Physical Review D, 2018 - APS
We investigate dynamics of probe particles moving in the near-horizon limit of extremal
Myers-Perry black holes in arbitrary dimensions. Employing ellipsoidal coordinates we show …

Hidden symmetries of near-horizon extremal Kerr-AdS-NUT geometries

S Sadeghian - Physical Review D, 2018 - APS
We study the hidden symmetries, the symmetries associated with Killing tensors, of the near-
horizon geometry of odd-dimensional Kerr-AdS-NUT black holes in two limits: generic …

Separability of Klein-Gordon equation on near horizon extremal Myers-Perry black hole

S Sadeghian, H Demirchian - Physical Review D, 2021 - APS
We investigate the separability of the Klein-Gordon equation on near horizon of d-
dimensional rotating Myers-Perry black hole in two limits:(i) generic extremal case and (ii) …

Integrability of geodesics in near-horizon extremal vanishing horizon Myers–Perry black holes

H Demirchyan, A Nersessian, S Sadeghian… - Physics of Atomic …, 2018 - Springer
We study geodesics on the near horizon geometry of odd-dimensional Myers–Perry black
hole in the extremal vanishing horizon (EVH) limit. Knowing the fact that geodesics …

Separability of Klein-Gordon Equation on Near Horizon Extremal Myers-Perry Black Hole

H Demirchian, S Sadeghian - arXiv preprint arXiv:2108.11742, 2021 - arxiv.org
We investigate the separability of Klein-Gordon equation on near horizon of d-dimensional
rotating Myers-Perry black hole in two limits: 1) generic extremal case and 2) extremal …

Integrable systems connected with black holes

H Demirchian - arXiv preprint arXiv:1908.01322, 2019 - arxiv.org
arXiv:1908.01322v1 [hep-th] 4 Aug 2019 Page 1 NAS RA V. Ambartsumian’s Byurakan
Astrophysical Observatory Hovhannes Demirchian Integrable systems connected with black …

Integrable systems connected with black holes/Սև խոռոչների հետ կապված ինտեգրվող համակարգեր

ՀԳ Դեﬕրճյան - 2019 - dspace.nla.am
This work is devoted to the study of some important questions in general relativity/Թեզում
ուսումնասիրվել են հարաբերականության տեսության երկու կարևորագույն լուծումների՝ …