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On the Stability of a Galactic Disk in Modified Gravity
catalog of spiral galaxies in order to compare the local stability criteria. In this perspective, we have compared MOG with Newtonian gravity and investigated the possible and detectable differences between these theories....
Evolution of spiral galaxies in modified gravity
We study the evolution of simulated disk galaxies in the context of a nonlocal theory of gravity. In this theory, the appearance of the dark matter problem in cosmology and astrophysics is a manifestation of the nonlocality of the gravitational...
On The Gravitational Stability Of The Maclaurin Disl
We study the global gravitational stability of a gaseous self-gravitating Maclaurin disk in the absence of a halo.
Further, we replace Newtonian gravity with the specific modified gravity theory known as MOG in the ...
Stellar Bar Evolution in the Absence of Dark Matter Halo
We study the stellar bar growth in high-resolution numerical galaxy models with and without dark matter halos. In all models, the galactic disk is exponential, and the halos are rigid or live Plummer spheres. More specifically, when there is no dark...
Independent Component Analysis for the objective classification of globular clusters of the galaxy NGC 5128
(پایداری قرصهای کهکشانی در نظریه تعمیم یافته گرانش) On the stability of galactic disks in MOG
in Newtonian gravity. In other words, MOG predicts higher
star formation rates for outer parts of disk galaxies. In order to check the global stability of self-
gravitating disks, we use N-body simulations. For some simple and idealized galaxy...
AGN Activity and IGM Heating in Fossil Cluster RX J1416.4+2315
We study active galactic nucleus (AGN) activity in the fossil galaxy cluster RX J1416.4+2315. Radio observations
were carried out using the Giant Metrewave Radio Telescope at two frequencies, 1420 and 610 MHz. A weak radio...
Bondi accretion in the finite luminous region of elliptical galaxies
The classical Bondi model is adopted to study accretion on to the finite luminous region around the central massive black hole (MBH) in an elliptical galaxy. Unlike Bondi, we define the boundary conditions at a certain finite radius (rf) instead...