109 citations · 204 across the 11 of their papers we have counts for
11 papers
Extended Effective Field Theory of Dark Energy: Ghost Condensate Dark Energy with Sextic Dispersion Relation in de Sitter Spacetime
A. Ashoorioon, M. B. Jahani Poshteh, A. Yousefi-Sostani
We continue our studies of the ghost condensate (GC) with sixth-order dispersion relation. Contrary to the GC with quartic dispersion relation, we find that the correction to the N…
Particle motion and accretion disk around rotating accelerating black holes
Amjad Ashoorioon, Mohammad Bagher Jahani Poshteh, Orlando Luongo
We investigate the motion of test particles and the properties of accretion disks around rotating, accelerating black hole spacetimes with non-zero cosmological constants. To do so…
Distinguishing a Slowly Accelerating Black Hole by Differential Time Delays of Images
Amjad Ashoorioon, Mohammad Bagher Jahani Poshteh, Robert B. Mann
Accelerating supermassive black holes, connected to cosmic strings, could contribute to structure formation and get captured by galaxies if their velocities are small. This would m…
Timelike orbits around accelerating black holes
Mohammad Bagher Jahani Poshteh
We study the geodesics of massive particles around accelerating Schwarzschild black hole. We show that the radius of the innermost stable circular orbit increases and the angular m…
Lensing Signatures of a Slowly-Accelerated Black Hole
Amjad Ashoorioon, Mohammad Bagher Jahani Poshteh, Robert B. Mann
Accelerating black holes, connected to cosmic strings could evolve to supermassive black holes. However, if they are going to take part in structure formation and resides at the ce…
A new nonlinear electrodynamics and electrically charged regular black holes
Mohammad Bagher Jahani Poshteh, Nematollah Riazi
A regular static, spherically symmetric electrically charged black hole solution of general relativity coupled to a new theory for nonlinear electrodynamics is presented. This theo…
Gravitational Lensing by Black Holes in Einsteinian Cubic Gravity
Mohammad Bagher Jahani Poshteh, Robert B. Mann
We investigate the predictions of Einsteinian Cubic Gravity (ECG) for the lensing effects due to supermassive black holes at the center of Milky Way and other galaxies. Working in…
Shadows, Signals, and Stability in Einsteinian Cubic Gravity
Robie A. Hennigar, Mohammad Bagher Jahani Poshteh, Robert B. Mann
We conduct a preliminary investigation into the phenomenological implications of Einsteinian cubic gravity (ECG), a 4-dimensional theory of gravity cubic in curvature of interest f…
Phase transition and thermodynamic stability in extended phase space and charged Hořava-Lifshitz black holes
Mohammad Bagher Jahani Poshteh, Nematollah Riazi
For charged black holes in Horava-Lifshitz gravity, a second order phase transition takes place in extended phase space where the cosmological constant is taken as thermodynamic pr…
Generalized Ehrenfest's Equations and phase transition in Black Holes
Mohammad Bagher Jahani Poshteh, Behrouz Mirza, Fatemeh Oboudiat
We generalize Ehrenfest's equations to systems having two work terms, i.e. systems with three degrees of freedom. For black holes with two work terms we obtain nine equations inste…
Phase transition, critical behavior, and critical exponents of Myers-Perry black holes
Mohammad Bagher Jahani Poshteh, Behrouz Mirza, Zeinab Sherkatghanad
The critical behavior of Myers-Perry black holes with equal angular momenta in even dimensions are studied. We include the corrections beyond the semiclassical approximation on Haw…