145 citations · 1.4k across the 46 of their papers we have counts for
30 papers · 1 filter
The Magellanic Clouds are very rare in the IllustrisTNG simulations
Moritz Haslbauer, Indranil Banik, Pavel Kroupa +2
The Large and Small Magellanic Cloud (LMC and SMC) form the closest interacting galactic system to the Milky Way, therewith providing a laboratory to test cosmological models in th…
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…
The distribution and morphologies of Fornax Cluster dwarf galaxies suggest they lack dark matter
E. Asencio, I. Banik, S. Mieske +3
Due to their low surface brightness, dwarf galaxies are particularly susceptible to tidal forces. The expected degree of disturbance depends on the assumed gravity law and whether…
Overestimated inclinations of Milgromian disc galaxies: the case of the ultradiffuse galaxy AGC 114905
Indranil Banik, Srikanth Togere Nagesh, Hosein Haghi +2
We present hydrodynamical star-forming simulations in the Milgromian dynamics (MOND) framework of a gas-rich disc galaxy with properties similar to AGC 114905, which has recently b…
3D hydrodynamic simulations for the formation of the Local Group satellite planes
Indranil Banik, Ingo Thies, Roy Truelove +5
The existence of mutually correlated thin and rotating planes of satellite galaxies around both the Milky Way (MW) and Andromeda (M31) calls for an explanation. Previous work in Mi…
The High Fraction of Thin Disk Galaxies Continues to Challenge ΛCDM Cosmology
Moritz Haslbauer, Indranil Banik, Pavel Kroupa +2
Any viable cosmological framework has to match the observed proportion of early- and late-type galaxies. In this contribution, we focus on the distribution of galaxy morphological…
Detailed numerical implementation of the wide binary test
Indranil Banik, Charalambos Pittordis, Will Sutherland
The observed flat rotation curves of galaxies are among a number of astrophysical phenomena which require a larger acceleration than can be provided by the Newtonian gravity of the…
The Kennicutt-Schmidt law and the main sequence of galaxies in Newtonian and Milgromian dynamics
Akram Hasani Zonoozi, Patrick Lieberz, Indranil Banik +2
The Kennicutt-Schmidt law is an empirical relation between the star formation rate surface density () and the gas surface density () in disc galaxies. The relatio…
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…
On the absence of backsplash analogues to NGC 3109 in the CDM framework
Indranil Banik, Moritz Haslbauer, Marcel S. Pawlowski +2
The dwarf galaxy NGC 3109 is receding 105 km/s faster than expected in a CDM timing argument analysis of the Local Group and external galaxy groups within 8 Mpc (Banik \& Zhao 2…
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…
The global stability of M33 in MOND
Indranil Banik, Ingo Thies, Graeme Candlish +3
The dynamical stability of disk galaxies is sensitive to whether their anomalous rotation curves are caused by dark matter halos or Milgromian Dynamics (MOND). We investigate this…
Constraints on the star formation histories of galaxies in the Local Cosmological Volume
Pavel Kroupa, Moritz Haslbauer, Indranil Banik +2
The majority of galaxies with current star-formation rates (SFRs), SFRo >= 10^-3 Msun/yr, in the Local Cosmological Volume where observations should be reliable, have the property…
The Star Formation History and Dynamics of the Ultra-diffuse Galaxy Dragonfly 44 in MOND and MOG
Hosein Haghi, Vahid Amiri, Akram Hasani Zonoozi +3
The observed line-of-sight velocity dispersion of the ultra diffuse galaxy Dragonfly 44 (DF44) requires a Newtonian dynamical mass-to-light ratio of $M_{dyn}/L_I=26^{+7}_…
The ultra-diffuse dwarf galaxies NGC 1052-DF2 and 1052-DF4 are in conflict with standard cosmology
Moritz Haslbauer, Indranil Banik, Pavel Kroupa +1
Recently van Dokkum et al. (2018b) reported that the galaxy NGC 1052-DF2 (DF2) lacks dark matter if located at Mpc from Earth. In contrast, DF2 is a dark-matter-dominated dwar…
Testing gravity with interstellar precursor missions
Indranil Banik, Pavel Kroupa
We consider how the trajectory of an interstellar precursor mission would be affected by the gravity of the Sun in Newtonian and Milgromian dynamics (MOND). The Solar gravity is ${…
A new formulation of the external field effect in MOND and numerical simulations of ultra-diffuse dwarf galaxies application to NGC 1052-DF2 and NGC 1052-DF4
Hosein Haghi, Pavel Kroupa, Indranil Banik +7
The ultra-diffuse dwarf galaxy NGC 1052-DF2 (DF2) has ten (eleven) measured globular clusters (GCs) with a line-of-sight velocity dispersion of km/s ($σ=10.6…
Galaxies lacking dark matter in the Illustris simulation
Moritz Haslbauer, Joerg Dabringhausen, Pavel Kroupa +2
(Abridged) Any viable cosmological model in which galaxies interact predicts the existence of primordial and tidal dwarf galaxies (TDGs). In particular, in the standard model of co…
A new line on the wide binary test of gravity
Indranil Banik
The relative velocity distribution of wide binary (WB) stars is sensitive to the law of gravity at the low accelerations typical of galactic outskirts. I consider the feasibility o…
A common Milgromian acceleration scale in nature
Pavel Kroupa, Indranil Banik, Hosein Haghi +6
A central problem of contemporary physics is whether the law of gravity is non-Newtonian on galaxy scales. Rodrigues et al. argue that Milgromian gravitation, which solves the flat…
Toomre stability of disk galaxies in quasi-linear MOND
Indranil Banik, Mordehai Milgrom, Hongsheng Zhao
We consider disk stability in the quasi-linear formulation of MOND (QUMOND), the basis for some -body integrators. We generalize the Toomre criterion for the stability of disks…
Distinguishing Standard from Modified Gravity in the Local Group and beyond
Indranil Banik
The works in this portfolio test the hypothesis that it is not possible to extrapolate the Newtonian inverse square law of gravity from Solar System to galaxy scales. In particular…
Testing Gravity with wide binary stars like Centauri
Indranil Banik, Hongsheng Zhao
We consider the feasibility of testing Newtonian gravity at low accelerations using wide binary (WB) stars separated by kAU. These systems probe the accelerations at which…
Origin of the Local Group satellite planes
Indranil Banik, David O'Ryan, Hongsheng Zhao
We attempt to understand the planes of satellite galaxies orbiting the Milky Way (MW) and M31 in the context of Modified Newtonian Dynamics (MOND), which implies a close MW-M31 fly…