35 citations · 72 across the 6 of their papers we have counts for
6 papers
From Low- to High-Frequency QPOs around the Non-Rotating Hairy Horndeski Black Hole: Microquasar GRS 1915+105
Orhan Donmez
Research on the Horndeski black hole, associated with the scalar hairy parameter, offers insights into enigmatic cosmic phenomena such as dark matter. Additionally, the numerical s…
Possible wormholes in gravity sourced by solitonic quantum wave and cold dark matter halos and their repulsive gravity effect
Abdelghani Errehymy, Youssef Khedif, Orhan Donmez +3
In this paper, we present new generalized wormhole (WH) solutions within the context of gravity. Specifically, we focus on gravitational theories formulated in the me…
Estimating the possible QPOs of M87* from the parameters of a hairy Kerr black hole
Orhan Donmez, Fatih Dogan
In this paper, we study the dynamics of the shock cone formed around the hairy Kerr black hole due to BHL accretion and investigate the QPO behaviors resulting from the black hole-…
Late-time cosmology in gravity: Analytical solutions and observational fits
Yerlan Myrzakulov, O. Donmez, M. Koussour +3
In this study, we examined the late-time cosmic expansion of the universe within the framework of gravity, where denotes the non-metricity and represents th…
Observational constraints on the equation of state of viscous fluid in gravity
M. Koussour, A. Altaibayeva, S. Bekov +3
In this paper, we investigate a cosmological model based on viscous gravity as a potential alternative to dark energy. This model incorporates bulk viscosity and is analyz…
Unraveling the mysteries of wormhole formation in Rastall-Rainbow gravity: A comprehensive study using the embedding approach
Abdelghani Errehymy, Ayan Banerjee, Orhan Donmez +3
The present work looks for the possible existence of static and spherically symmetric wormhole geometries in Rastall-Rainbow gravity. Since, the Rastall-Rainbow gravity model has b…