no code implementations • 2 Mar 2021 • Mahmood Roshan, Indranil Banik, Neda Ghafourian, Ingo Thies, Benoit Famaey, Elena Asencio, Pavel Kroupa
Although the absence of strong bars in our idealized, isolated extended gravity simulations is in tension with observations, they reproduce the strong observational preference for `fast' bar pattern speeds, which we could not do with DM.
Astrophysics of Galaxies General Relativity and Quantum Cosmology
no code implementations • 7 Jan 2021 • Mahmood Roshan, Bahram Mashhoon
We focus here for simplicity on the exterior Schwarzschild spacetime and show that the effective tidal acceleration to near the speed of light can occur for geodesic motion in certain radially outward directions.
General Relativity and Quantum Cosmology High Energy Astrophysical Phenomena
