90 citations · 111 across the 5 of their papers we have counts for
5 papers
A bar stability criterion distinguishing between modified gravity and dark matter in galaxies
Tahere Kashfi, Mahmood Roshan, Virginia Cuomo +3
This paper presents a study on the distinguishability of dark matter and Modified Newtonian Dynamics (MOND) at galactic scales based on the stability criterion proposed by Efstathi…
The vertical structure of galactic discs: nonlocal gravity versus dark matter
Tahere Kashfi, Mahmood Roshan
Recent isolated galactic simulations show that the morphology of galactic discs in modified gravity differs from that of the standard dark matter model. In this study, we focused o…
Bar formation in submaximal discs: a challenge for ΛCDM
Tahere Kashfi, Mahmood Roshan, Benoit Famaey
Bar formation in cosmological simulations of galaxy formation remains challenging. It was previously shown that the fraction of barred galaxies at low stellar masses ($M_*<10^{10.5…
Cosmological Dynamics of Relativistic MOND
Tahere Kashfi, Mahmood Roshan
In this paper, we investigate the recently proposed relativistic theory for MOND using the phase space analysis. Unlike its precedent theory, namely TeVeS, this theory is claimed t…
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…