Article
Physics, Multidisciplinary
Wen-Bin Feng, Si-Jiang Yang, Qin Tan, Jie Yang, Yu-Xiao Liu
Summary: Research suggests that overcharging a charged Taub-NUT regular black hole is possible through the scattering of a charged field and absorption of a charged particle. Both near-extremal and extremal black holes cannot be overcharged through charged scalar field scattering. While the event horizon of a near-extremal charged Taub-NUT regular black hole may be destroyed by absorption of a charged particle, it may not be overcharged if charge and energy cross the event horizon in a continuous path.
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
(2021)
Article
Astronomy & Astrophysics
Hao Chen, Bekir Can Lutfuoglu, Hassan Hassanabadi, Zheng-Wen Long
Summary: In this paper, the quantum correction on the thermodynamics of the Reissner-Nordstrom black hole in the presence of quintessence matter associated with dark energy is investigated. The modified Hawking temperature, heat capacity, and entropy functions of the black hole are derived. It is found that the modified uncertainty principles and normalization factor have significant effects on the thermodynamic properties of the black hole, and graphical methods are used to compare the findings within different uncertainty principles.
Article
Materials Science, Multidisciplinary
Israr Ali Khan, Amir Sultan Khan, Saeed Islam, Shah Qasim Jan, Kottakkaran Sooppy Nisar, Muhammad Uzair Shah
Summary: This article investigates the dynamics of neutral and charged particles in a magnetic field around a Reissner-Nordstrom black hole surrounded by quintessence, considering Noether symmetries and conservation laws in the corresponding spacetime. The study explores the effects of angular momentum, quintessence parameter, and magnetic field on the particles' dynamics, and also examines the orbit stability of the spacetime using the Lyapunov exponent.
RESULTS IN PHYSICS
(2021)
Article
Astronomy & Astrophysics
Aloke Kumar Sinha
Summary: In this study, the thermal stability of a charged non-rotating black hole is examined, revealing that it is quasi stable but not completely stable, contrary to Hawking's prediction. The black hole exhibits phase transition and attempts to resist decay under Hawking radiation, without ultimate success.
MODERN PHYSICS LETTERS A
(2021)
Article
Astronomy & Astrophysics
Libo Xie, Chaoxi Fang, Jie Jiang, Ming Zhang
Summary: In this study, we analytically investigate the scalarization of higher-dimensional charged Reissner-Nordstrom black hole. It is found that a static massive scalar field, which is non-minimally coupled to the Gauss-Bonnet invariant, can be supported by the higher-dimensional black hole in the super-critical charge regime. Moreover, we demonstrate that the static massive scalar shell can be incredibly thin in the large mass regime.
Article
Astronomy & Astrophysics
Sanjar Shaymatov, Bakhtiyor Narzilloev, Ahmadjon Abdujabbarov, Cosimo Bambi
Summary: The study investigates the dynamics of neutral and charged test particles around axially symmetric magnetized black hole spacetime, showing that the combined effects of black hole electric charge and magnetic field strongly affect the innermost stable circular orbit radius. The repulsive (attractive) Coulomb force dominates over the Lorentz force from the black hole magnetic field, and increases in black hole magnetic field and electric charge lead to high center of mass energy extracted by the collision of particles. Ultimately, the presence of magnetic field in a magnetized black hole solution results in axially symmetric spacetime.
Article
Physics, Particles & Fields
Yi-Feng Zou, Jun-Huai Xu, Zhan-Feng Mai, Jia-Hui Huang
Summary: This paper discusses the superradiant stability of dyonic black holes with charged massive scalar perturbation, revealing that the additional coupling of the charged scalar perturbation with the magnetic field makes the system more superradiantly unstable.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Astronomy & Astrophysics
B. Hamil, B. C. Lutfuoglu
Summary: In this work, the thermodynamics and shadow of a quantum-corrected Reissner-Nordstrom black hole surrounded by quintessence matter are investigated. The quantum-corrected metric of the black hole is considered, and the effects of the quintessence matter field are coupled to the lapse function. The mass, Hawking temperature, specific heat, and equation of state functions are obtained, and the characteristic thermal behaviors of the black hole under the scenarios of different quantum corrections and quintessence matter effects are discussed. It is found that quintessence matter plays an important role in the formation of a black hole remnant and the black hole exhibits Van der Waals fluid behavior. The black hole shadow is also modified by the quintessence matter and quantum corrections.
PHYSICS OF THE DARK UNIVERSE
(2023)
Article
Astronomy & Astrophysics
Sanjar Shaymatov, Pankaj Sheoran, Ricardo Becerril, Ulises Nucamendi, Bobomurat Ahmedov
Summary: In this paper, the Penrose process in the vicinity of the axially symmetric magnetized Reissner-Nordstrom black hole is investigated for neutral and charged particles. It is found that there are regions where the g(tt) component of the metric tensor is positive, not only close to the event horizon but also far away in the potential wells. The effect of the magnetic field on the efficiency of the Penrose process for the axially symmetric magnetized black hole case is also examined, and compared with the case of a Kerr black hole.
Article
Physics, Multidisciplinary
C. Tekincay, G. Gecim, Y. Sucu
Summary: This study investigates quantum gravity corrections to the thermodynamic quantities of Reissner-Nordstrom anti-de Sitter black hole surrounded by quintessence under the GUP effect. The findings suggest higher efficiency under the GUP effect compared to the standard one, especially when considering the attractive Coulomb interaction and influence of zitterbewegung particles.
Article
Physics, Particles & Fields
Jia-Hui Huang
Summary: This study analytically investigates the superradiant stability of asymptotically flat D-dimensional extremal Reissner-Nordstrom black holes under charged massive scalar perturbation. It applies an analytical method previously proposed by the author to prove the absence of a black hole bomb and the superradiant stability of D-dimensional Reissner-Nordstrom black holes under charged massive scalar perturbation.
EUROPEAN PHYSICAL JOURNAL C
(2022)
Article
Astronomy & Astrophysics
Mehrab Momennia, Seyed Hossein Hendi
Summary: This study considers a small correction to the Maxwell field and shows that the resultant black hole solutions undergo reentrant phase transition, leading to novel phase behavior. The nonlinearity parameter α<=4q(2)/7 provides a new classification in the canonical ensemble of extended phase space. For α<4q(2)/7, there is a reentrant phase transition, while for α=4q(2)/7, there is no phase transition below (at) the critical point. Additionally, small and large black holes are thermodynamically distinguishable for temperatures and pressures higher than the critical ones.
Article
Astronomy & Astrophysics
M. Dehghani
Summary: This study introduces two novel classes of nonlinearly charged black hole solutions that are coupled to logarithmic and exponential theories of nonlinear electrodynamics in the context of massive gravity theory. The study calculates the thermodynamic and conserved quantities of the black holes and investigates their thermal stability and global stability. By comparing the results obtained from different methods and considering the thermodynamic pressure, the critical behavior of the black holes in the extended phase space is also studied.
Article
Physics, Particles & Fields
Jing Zhang, Yi Xie
Summary: The precessing and periodic orbits of a test timelike particle around the black-bounce-Reissner-Nordstrom spacetime, characterized by its charge and bounce parameter, are investigated. The exact forms of its marginally bound orbit and innermost stable circular orbit are obtained. Attention is given to the precessing orbits and the resulting relativistic periastron advance is found. The study also looks at the periodic orbits and shows that small variations in the charge and bounce parameter can cause the motion to switch between periodic and precessing orbits. A distinct degeneracy is found in these two types of orbits, where specific combinations of the charge and bounce parameters can generate the exact same orbital motion in the black-bounce-Reissner-Nordstrom spacetime, mimicking that of the Schwarzschild black hole. To break this degeneracy, GRAVITY's observation of the precession of S2 star around Sgr A* and the shadow diameter measurements of Sgr A* by the Event Horizon Telescope are used to provide preliminary bounds on the charge and bounce parameter.
EUROPEAN PHYSICAL JOURNAL C
(2022)
Article
Physics, Multidisciplinary
Bobur Turimov, Madina Boboqambarova, Bobomurat Ahmedov, Zdenek Stuchlik
Summary: This paper explores the differences between electrically and magnetically charged Reissner-Nordstrom black holes by studying the motion of test particles, fundamental frequencies of charged particles, and synchrotron radiation by accelerated charged particles around the black hole.
EUROPEAN PHYSICAL JOURNAL PLUS
(2022)
Article
Physics, Mathematical
Kimet Jusufi, Mustapha Azreg-Ainou, Mubasher Jamil, Tao Zhu
Summary: This paper investigates the effects of the Generalized Uncertainty Principle (GUP) on the shadow and quasinormal modes (QNMs) of GUP-modified Kerr black holes. The study reveals that the GUP modification increases the curvature radius of the shadow and that it increases linearly with the GUP parameter. By using observational data and fitting techniques, the upper limits of the GUP parameter and the correction parameter in the modified black hole metric are determined.
INTERNATIONAL JOURNAL OF GEOMETRIC METHODS IN MODERN PHYSICS
(2022)
Article
Astronomy & Astrophysics
Kimet Jusufi, Mustapha Azreg-Ainou, Mubasher Jamil, Emmanuel N. Saridakis
Summary: Using observations of the central black hole and stars, we extract constraints on Barrow entropy, finding an upper bound less strong than the Big Bang Nucleosynthesis but significantly stronger than late-time cosmological constraints.
Article
Astronomy & Astrophysics
Javlon Rayimbaev, Bushra Majeed, Mubasher Jamil, Kimet Jusufi, Anzhong Wang
Summary: In this article, we investigate the particle dynamics around a Bardeen-Kiselev black hole, including its geometrical properties, the dynamics of test particles, and the relationship with rotating Kerr black hole.
PHYSICS OF THE DARK UNIVERSE
(2022)
Article
Astronomy & Astrophysics
Kimet Jusufi, Mustapha Azreg-Ainou, Mubasher Jamil, Qiang Wu
Summary: This paper focuses on the relationship between quasinormal modes (QNMs) and a rotating black hole shadow, using the example of a quantum deformed Kerr black hole. The study shows that, in the eikonal limit, the real part of QNMs is related to the Keplerian frequency for equatorial orbits. The paper also explores the typical shadow radius, computes the corresponding modes, and investigates the thermodynamical stability of the quantum deformed Kerr black hole, as well as other astrophysical applications.
Article
Physics, Nuclear
Farruh Atamurotov, Ibrar Hussain, Ghulam Mustafa, Ali Ovgun
Summary: In this study, the gravitational deflection angle of photons in the weak field limit and shadow cast by the electrically charged and spherically symmetric static Kiselev black hole in the string cloud background are investigated. The influences of the BH charge Q, quintessence parameter gamma, and string cloud parameter a on the weak deflection angle, radius of photon spheres, and size of the BH shadow are studied. Moreover, the effects of plasma on the weak deflection angle and shadow cast by the charged-Kiselev BH surrounded by the clouds of strings are analyzed. Data from the Event Horizon Telescope collaboration are used to obtain constraints on the values of the parameters gamma and a.
Article
Physics, Multidisciplinary
Faisal Javed, Sobia Sadiq, G. Mustafa, Ibrar Hussain
Summary: This analysis explores interesting aspects of wormhole geometry and confirms the presence of exotic matter due to the violation of energy conditions. Traversable wormholes satisfying null energy conditions can be realized in both considered frameworks. Thin-shells for wormhole geometry with different shape functions are obtained and their stability is examined. The position of expected event horizon depends on physical parameters and increases for the second shape function.
Article
Mathematics
Asia Liaqat, Ibrar Hussain
Summary: This paper comprehensively analyzes the approximate Noether and Lie symmetries of the 2nd order for the charged black hole in the Einstein frame. The study shows that there are no new approximate symmetries and no energy rescaling factor observed in this spacetime.
ARABIAN JOURNAL OF MATHEMATICS
(2023)
Article
Physics, Multidisciplinary
G. Mustafa, S. K. Maurya, Ibrar Hussain
Summary: This study investigates wormhole solutions in the f(tau,T) gravity background by utilizing the concept of conformal symmetry. The exact shape functions are calculated using Gaussian and Lorentzian distributions as the noncommutative source of energy density. The presence of exotic matter is confirmed due to the violation of null energy conditions. The physical aspects of epicyclic frequencies and red-blue shifts of test particles in the obtained wormholes are discussed, along with the stability analysis using the Tolman-Oppenheimer-Volkoff equation.
FORTSCHRITTE DER PHYSIK-PROGRESS OF PHYSICS
(2023)
Article
Astronomy & Astrophysics
Javlon Rayimbaev, Ahmadjon Abdujabbarov, Mubasher Jamil, Wen-Biao Han, Malika Khudoyberdieva
Summary: This paper discusses the motion of various types of charged, magnetized, and neutral test particles near static and spherically symmetric electrically charged black holes in the Einstein-/Ether gravitational theory. The effects of the free parameters in the theory on particle motion in curved spacetime are analyzed, focusing on the stability of circular and radially varying orbits for different types of particles. The behavior of charged particle motion around black holes with a uniform magnetic field is investigated, and values of the parameters c13 and c14 are proposed to model astrophysical black holes based on the spin of Kerr black holes.
MODERN PHYSICS LETTERS A
(2022)
Article
Physics, Multidisciplinary
Kamran Qadir Abbasi, Ibrar Hussain
Summary: This paper explores gyratonic pp-waves using the Noether symmetry approach, examining the variation of kinetic energy and angular momentum, and identifying energy and angular momentum transfer between the gravitational field and free particles under certain conditions.
EUROPEAN PHYSICAL JOURNAL PLUS
(2022)
Article
Physics, Multidisciplinary
Temurbek Mirzaev, Song Li, Bakhtiyor Narzilloev, Ibrar Hussain, Ahmadjon Abdujabbarov, Bobomurat Ahmedov
Summary: We study the effect of strong gravitational field on the light rays emitted from particles in the accretion disk near the Kerr-Newman-NUT-Kiselev (KNNK) black hole in Rastall gravity (RG). The thermal flux of the accretion disk strongly depends on the intensity of the quintessence in the spacetime of the KNNK black hole in RG, and decreases with increasing quintessential intensity. The shadow cast by the KNNK black hole in RG is influenced by the inclination angle of the incident light and the parameters alpha and omega(q) of the quintessence.
EUROPEAN PHYSICAL JOURNAL PLUS
(2023)
Article
Physics, Nuclear
Farruh Atamurotov, Mubasher Jamil, Kimet Jusufi
Summary: In this study, the optical properties of a renormalization group improved Schwarzschild black hole in a plasma medium are investigated. The deflection angle of light in the weak gravity regime is computed for uniform and non-uniform plasma media, revealing the modifications caused by the plasma medium. The effects of plasma media play an important role in the optical appearance of black holes.
Article
Physics, Multidisciplinary
G. Mustafa, Ibrar Hussain, Farruh Atamurotov, Wu-Ming Liu
Summary: This study explores the physical effects of dark matter on wormhole geometry in the f (T, T) gravity framework. By analyzing the field equations of f (T, T) gravity using a diagonal tetrad, the study investigates wormhole solutions immersed in galactic halos. The implication of dark matter halos in the framework of f (T, T) gravity leads to novel traversable wormhole solutions that are consistent with the natural prediction of accelerated expansion in the late-time stages of the Universe.
EUROPEAN PHYSICAL JOURNAL PLUS
(2023)
Article
Physics, Particles & Fields
Kimet Jusufi, Saurabh Kumar, Mustapha Azreg-Ainou, Mubasher Jamil, Qiang Wu, Cosimo Bambi
Summary: In this study, we investigate the possibility of a wormhole as a candidate for the central object of Sgr A(star) and test this idea by constraining their geometry using the motion of S2 star and the reconstructed shadow images. We consider three wormhole models and find that they satisfy the flare out condition. We also explore the accretion of infalling gas model and study the accretion rate, electromagnetic radiation intensity, and shadow images.
EUROPEAN PHYSICAL JOURNAL C
(2022)
Article
Physics, Particles & Fields
Sanjar Shaymatov, Mubasher Jamil, Kimet Jusufi, Kazuharu Bamba
Summary: In this study, we investigate the dynamics of test particles around a magnetized Ernst black hole, taking into account its surrounding magnetic field. We find that the magnetic field has a significant impact on the radius of the innermost stable circular orbit (ISCO) and the epicyclic frequencies, especially for charged particles. By analyzing the astrophysical quasiperiodic oscillation (QPO) data of three microquasars, we determine the order of magnitude of the magnetic field.
EUROPEAN PHYSICAL JOURNAL C
(2022)
