190 citations · 1k across the 55 of their papers we have counts for
24 papers · 1 filter
The onset of stellar bars at Cosmic Noon. Bar-driven quenching and AGN co-evolution in a mature disc galaxy
Luca Costantin, Lorenzo Morelli, Cristina Cabello +15
Observations with the JWST revealed an unexpected abundance of barred galaxies at Cosmic Noon. However, the physical properties of these early bars are almost unconstrained, as it…
Jeans criterion in hydrostatic stratified media
Mahmood Roshan, Asiyeh Habibi
The classical Jeans stability criterion neglects spatial gradients in background physical quantities such as density and pressure. Here, we revisit the Jeans analysis for a non-rot…
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 Tremaine-Weinberg method at high redshifts
Mahmood Roshan, Asiyeh Habibi, J. Alfonso L. Aguerri +11
This paper examines the reliability of the Tremaine-Weinberg (TW) method in measuring the pattern speed of barred galaxies at high redshifts. Measuring pattern speeds at high redsh…
Dynamical friction by coupled dark energy
Nasrin Nari, Mahmood Roshan
In this paper, we examine dynamical friction at galactic scales within the framework of coupled dark energy. This model posits dark energy as coupled quintessence, which maintains…
The redshift evolution of galactic bar pattern speed in TNG50
Asiyeh Habibi, Mahmood Roshan, Mohammad Hosseinirad +4
In this paper, the redshift evolution of the galactic bar properties, like the bar length, pattern speed, and bar fraction, has been investigated for simulated galaxies at stellar…