Zobrazeno 1 - 10
of 87
pro vyhledávání: '"Donmez, Orhan"'
Autor:
Donmez, Orhan
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 study of the GRS 1915+105 source, which exhibits continuous variability
Externí odkaz:
http://arxiv.org/abs/2408.10102
Autor:
Errehymy, Abdelghani, Khedif, Youssef, Donmez, Orhan, Daoud, Mohammed, Myrzakulov, Kairat, Bekov, Sabit
In this paper, we present new generalized wormhole (WH) solutions within the context of $f(R)$ gravity. Specifically, we focus on $f(R)$ gravitational theories formulated in the metric formalism, with our investigation centered on a power-law form re
Externí odkaz:
http://arxiv.org/abs/2408.07667
Autor:
Donmez, Orhan, Dogan, Fatih
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-cone interaction, aiming to predict the QPO frequencies that may occur
Externí odkaz:
http://arxiv.org/abs/2407.01478
Autor:
Errehymy, Abdelghani, Banerjee, Ayan, Donmez, Orhan, Daoud, Mohammed, Nisar, Kottakkaran Sooppy, Abdel-Aty, Abdel-Haleem
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 been constructed with the combination of Rastall theory and the gravity
Externí odkaz:
http://arxiv.org/abs/2406.04049
Autor:
Donmez, Orhan
In the region where the gravitational field is strong, we have examined the influence of different gravities on the accretion disk formed due to spherical accretion. To achieve this, we obtain numerical solutions of the GRH equations, utilizing Schwa
Externí odkaz:
http://arxiv.org/abs/2405.15467
The study conducted in this research paper utilizes the $f(Q,T)$ gravity, where $Q$ represents non-metricity and $T$ represents the trace of the energy-momentum tensor, to investigate the accelerated expansion of the universe. To complete the study,
Externí odkaz:
http://arxiv.org/abs/2404.14120
Autor:
Donmez, Orhan
Modeling of the shock cone formed around a static, hairy Horndeski black hole with Bondi-Hoyle-Lyttleton (BHL) accretion has been conducted. We model the dynamical changes of the shock cone resulting from the interaction of matter with the Horndeski
Externí odkaz:
http://arxiv.org/abs/2402.16707
Autor:
Donmez, Orhan
We propose a mechanism to explain the low-frequency QPOs observed in X-ray binary systems and AGNs. To achieve this, we perturbed stable accretion disks around Kerr and EGB black holes at different angular velocities, revealing characteristics of sho
Externí odkaz:
http://arxiv.org/abs/2311.08388
Autor:
Donmez, Orhan
The study of a disturbed accretion disk holds great significance in the realm of astrophysics, as such events play a crucial role in revealing the nature of disk structure, the release of energy, and the generation of shock waves. Consequently, they
Externí odkaz:
http://arxiv.org/abs/2310.13847
Autor:
Donmez, Orhan
Studying the gravitational collapse of dust particles toward newly formed black holes has gained popularity following the observation of gravitational waves resulting from the merger of black holes. In this paper, we focus on modelling the descent of
Externí odkaz:
http://arxiv.org/abs/2307.11725