Indranil Banik

The escape velocity curve of the Milky Way in modified Newtonian dynamics

We determine the escape velocity from the Milky Way (MW) at a range of Galactocentric radii in the context of Modified Newtonian Dynamics (MOND). Due to its non-linear nature, escape is possible if the MW is considered embedded in a constant external gravitational field (EF) from distant objects. We model this situation using a fully self-consistent method based on a direct solution of the governing equations out to several thousand disk scale lengths. We try out a range of EF strengths and mass models for the MW in an attempt to match the escape velocity measurements of Williams et al. (2017). A reasonable match is found if the EF on the MW is

A plane of high-velocity galaxies across the Local Group

{\sim 0.03 a_{_0}}

Effects of lens motion and uneven magnification on image spectra

, towards the higher end of the range considered. Our models include a hot gas corona surrounding the MW, but our results suggest that this should have a very low mass of

Does the galaxy NGC1052–DF2 falsify Milgromian dynamics?

{\sim 2 \times 10^{10} M_\odot}

Testing gravity with wide binary stars like α Centauri

to avoid pushing the escape velocity too high. Our analysis favours a slightly lower baryonic disk mass than the

Ice Shelves as Floating Channel Flows of Viscous Power-Law Fluids

{\sim 7 \times 10^{10} M_\odot}

Dynamical history of the Local Group in ΛCDM

required to explain its rotation curve in MOND. However, given the uncertainties, MOND is consistent with both the locally measured amplitude of the MW rotation curve and its escape velocity over Galactocentric distances of 8

Dynamical history of the Local Group in ΛCDM II − including external perturbers In 3D

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Galactic Archaeology with RAVE: Clues to the Formation of the Thick Disk

50 kpc.

The external field dominated solution in QUMOND and Aqual : application to tidal streams

We recently showed that several Local Group (LG) galaxies have much higher radial velocities (RVs) than predicted by a 3D dynamical model of the standard cosmological paradigm. Here, we show that 6 of these 7 galaxies define a thin plane with root mean square thickness of only 101 kpc despite a widest extent of nearly 3 Mpc, much larger than the conventional virial radius of the Milky Way (MW) or M31. This plane passes within