activity
20172022
most citedFast galaxy bars continue to challenge standard cosmology

90 citations · 166 across the 6 of their papers we have counts for

collaborators

6 papers

astro-ph.GA2022★ 21 cited

Simulations of star forming main sequence galaxies in Milgromian gravity

Srikanth T. Nagesh, Pavel Kroupa, Indranil Banik +6

We conduct hydrodynamical MOND simulations of isolated disc galaxies over the stellar mass range using the adaptive mesh refinement code \texts…

astro-ph.GA2021★ 90 cited

Fast galaxy bars continue to challenge standard cosmology

Mahmood Roshan, Neda Ghafourian, Tahere Kashfi +5

Many observed disc galaxies harbour a central bar. In the standard cosmological paradigm, galactic bars should be slowed down by dynamical friction from the dark matter halo. This…

astro-ph.GA2021★ 31 cited

Barred spiral galaxies in modified gravity theories

Mahmood Roshan, Indranil Banik, Neda Ghafourian +4

When bars form within galaxy formation simulations in the standard cosmological context, dynamical friction with dark matter (DM) causes them to rotate rather slowly. However, almo…

astro-ph.GA2020★ 9 cited

Does modified gravity predict fast stellar bars in spiral galaxies?

Neda Ghafourian, Mahmood Roshan, Shahram Abbassi

The evolution of disk galaxies in modified gravity is studied by using high-resolution N-body simulations. More specifically, we use the weak field limit of two modified gravity th…

astro-ph.GA2019★ 3 cited

Local Stability of Galactic Discs in Modified Dynamics

Hossein Shenavar, Neda Ghafourian

The local stability of stellar and fluid discs, under a new modified dynamical model, is surveyed by using WKB approximation. The exact form of the modified Toomre criterion is der…

astro-ph.GA2017★ 12 cited

Global stability of self-gravitating disks in modified gravity

Neda Ghafourian, Mahmood Roshan

We study the global stability of a self-gravitating disk in the context of Modified Gravity (MOG) using N-body simulations. This theory is a relativistic scalar-tensor-vector theor…