32 citations · 178 across the 35 of their papers we have counts for
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Generalized Polytropic Regular Black Holes in Arbitrary Dimensions
Seyed Naseh Sajadi, Supakchai Ponglertsakul, Petarpa Boonserm +2
We investigate static, spherically symmetric regular black holes with anti-de Sitter (AdS) asymptotics in arbitrary spacetime dimensions. They are solutions of Einstein gravity, so…
Analytically Approximate Black Hole Solution to Higher Curvature Gravity
Seyed Naseh Sajadi
Higher-curvature gravity usually leads to very complicated field equations, which makes it hard to find analytical solutions. In this work, we obtain analytical charged black hole…
More on near-horizon charges black holes with gravitational hair in three dimensions
Seyed Naseh Sajadi, Supakchai Ponglertsakul, Julio Oliva
With the aim of continuing the exploration of near-horizon charges in higher-curvature gravity, searching for sectors leading to universal behaviors, we first provide a thorough re…
Superradiance of Charged Static Black Hole in Cubic Gravity
Seyed Naseh Sajadi, Supakchai Ponglertsakul
Higher curvature gravity usually has complicated field equations, and solving them analytically is strenuous. In this work, we obtain an analytical charged black hole (BH) solution…
Slowly rotating black hole solution to Einstein-Bel-Robinson gravity
Seyed Naseh Sajadi, Supakchai Ponglertsakul, Robert B. Mann
We study slowly rotating black hole solutions in the Einstein-Bel-Robinson gravity (EBR) in four dimensions. At the leading order in the rotation parameter, the only modification w…
Physical Properties of Black Hole Solution in Einstein-Bel-Robinson Gravity
Seyed Naseh Sajadi, Supakchai Ponglertsakul, Dhruba Jyoti Gogoi
In this paper, we study the different properties of static spherically symmetric black hole solutions of Einstein-Bel-Robinson gravity (EBR), a modified four-dimensional theory of…
Constructing regular black holes from multi-polytropic equations of state
Seyed Naseh Sajadi, Supakchai Ponglertsakul, Orlando Luongo
Regular black holes are imagined as solutions to Einstein's field equations, with no singularities, albeit characterized by the presence of an internal structure. With the intentio…
More on Analytically Approximate Solution to Quadratic Gravity
Seyed Naseh Sajadi, Supakchai Ponglertsakul
In this work, we obtain the analytically approximation of static, spherically symmetric black hole solutions to EinsteinWeyl squared gravity by using the continued fraction expa…
Anisotropic Generalized Polytropic Spheres: Regular 3D Black Holes
Seyed Naseh Sajadi, Mohsen Khodadi, Orlando Luongo +1
We model gravitating relativistic 3D spheres composed of an anisotropic fluid in which the radial and transverse components of the pressure correspond to the vacuum energy and a ge…
Gravitational repulsive effects in 3D regular black holes
Orlando Luongo, Hernando Quevedo, S. N. Sajadi
In this work, we consider the effects of repulsive gravity in an invariant way for four static 3D regular black holes, using the eigenvalues of the Riemann curvature tensor, the Ri…
Black hole solutions to Einstein-Bel-Robinson gravity
S. N. Sajadi, Robert B. Mann, H. Sheikhahmadi +1
In this paper, we study the physical properties of black holes in the framework of the recently proposed Einstien-Bel-Robinson gravity. We show that interestingly the theory propag…
Astrophysical and electromagnetic emissivity properties of black holes surrounded by a quintessence type exotic fluid in the Scalar-Vector-Tensor Modified Gravity
Haidar Sheikhahmadi, Saheb Soroushfar, S. N. Sajadi +1
The astrophysical consequences of the presence of a quintessence scalar field on the evolution of the horizon and on the accretion disk surrounding a static black hole, in the Scal…
Analytically Approximation Solution to Gravity
Seyed Naseh Sajadi, Ali Hajilou, Seyed Hossein Hendi
In this paper, we obtain analytical approximate black hole solutions in the framework of gravity and the absence of a cosmological constant. In this area, we apply the equat…
Analytically Approximation Solution to Einstein-Cubic Gravity
S. N. Sajadi, S. H. Hendi
In this work, we introduce an analytical approximate black hole solution in Einstein-Cubic gravity. To obtain complete solutions, we construct the near horizon and asymptotic solut…
Charged Black Holes in Einsteinian Quartic Gravity
S. N. Sajadi, Leila Shahkarami, Farid Charmchi +1
In this paper, we studied Einsteinian quartic gravity minimally coupled to electrodynamics in four dimensions. First, by variation action, we obtain the field equations, and by int…
Quantum Cosmology in Thick Brane
S. H. Hendi, N. Riazi, S. N. Sajadi
One of the interesting open problems in the cosmological framework is applying quantum physics to the whole universe, consistently. Although different conceptual aspects of quantum…
Complexity Conjecture of Regular Electric Black Holes
B. Bahrami Asl, S. H. Hendi, S. N. Sajadi
Recently, the action growth rate of a variety of four-dimensional regular magnetic black holes in F frame is obtained in [1]. Here, we study the action growth rate of a four-dimens…
Phase Transition Between Flat Space Cosmology and Hot Flat Spacetimes in GMMG and EGMG Models
M. R. Setare, S. N. Sajadi
Flat Space Cosmology (FSC) spacetimes are exact solutions of 3D gravity theories. In this work, we study phase transition between FSC spacetimes and Hot Flat Spacetimes (HFS) in ge…
Z2-Symmetric Thick Brane with Specific Warp Function
S. H. Hendi, N. Riazi, S. N. Sajadi
In this work, we investigate a new warped five-dimensional, Z2-symmetric thick brane solution in the presence of a real scalar field. We examine the different geometric aspects of…
Analytically Approximation Solution to Higher Derivative Gravity
S. N. Sajadi, Robert B. Mann, N. Riazi +1
We obtain analytical approximate black hole solutions for higher derivative gravity in the presence of Maxwell electromagnetic source. We construct near horizon and asymptotic solu…
Physical Properties of a Regular Rotating Black Hole: Thermodynamics, Stability, Quasinormal Modes
S. H. Hendi, S. N. Sajadi, Maryam. Khademi
Respecting the angular momentum conservation of torque-free systems, it is natural to consider rotating solutions of massive objects. Besides that, motivated by the realistic astro…
Dynamical and Thermal Stabilities of Nonlinearly Charged AdS Black Holes
S. N. Sajadi, N. Riazi, S. H. Hendi
In this paper, we study an extended phase space thermodynamics of a nonlinearly charged AdS black hole. We examine both the local and global stabilities, and possible phase transit…
Energy of asymptotically AdS black holes in Exotic Massive Gravity and its log-extension
Robert B. Mann, Julio Oliva, S. N. Sajadi
Recently a new three-dimensional theory of gravity, dubbed Exotic Massive Gravity, was proposed as a unitary theory both in the bulk as well as in the dual CFT. This is the second…
Gravitational Lensing by Polytropic Wormholes
S. N. Sajadi, N. Riazi
We obtain static multi-polytropic wormhole solutions in the framework of GR gravity. The resulting metric is asymptotically Minkowskian, and locally that of a wormhole. We also exa…