Testing the MOND Paradigm of Modified Dynamics with Galaxy-Galaxy Gravitational Lensing [PDF]
Physical Review Letters, 2013 The MOND paradigm of modified dynamics predicts that the asymptotic gravitational potential of an isolated, bounded (baryonic) mass, M, is ϕ(r)=(MGa0)1/2ln(r).
Mordehai Milgrom
exaly +2 more sources
The SAMI galaxy survey: Mass and environment as independent drivers of galaxy dynamics [PDF]
Monthly notices of the Royal Astronomical Society, 2021 The kinematic morphology–density relation of galaxies is normally attributed to a changing distribution of galaxy stellar masses with the local environment. However, earlier studies were largely focused on slow rotators; the dynamical properties of the
J. van de Sande +19 more
semanticscholar +1 more source
On the fundamentality of the radial acceleration relation for late-type galaxy dynamics [PDF]
, 2023 Galaxies have been observed to exhibit a level of simplicity unexpected in the complex galaxy formation scenario posited by standard cosmology. This is particularly apparent in their dynamics, where scaling relations display much regularity and little ...
Richard Stiskalek, H. Desmond
semanticscholar +1 more source
Gas dynamics in dwarf galaxies as testbeds for dark matter and galaxy evolution [PDF]
Nature Astronomy, 2022 Dwarf galaxies are ideal laboratories to test dark matter models and alternative theories because their dynamical mass (from observed kinematics) largely outweighs their baryonic mass (from gas and stars).
F. Lelli
semanticscholar +1 more source
Introducing the NEWHORIZON simulation: Galaxy properties with resolved internal dynamics across cosmic time [PDF]
Astronomy & Astrophysics, 2020 Hydrodynamical cosmological simulations are increasing their level of realism by considering more physical processes and having greater resolution or larger statistics.
Y. Dubois +15 more
semanticscholar +1 more source
Heart of darkness: the influence of galactic dynamics on quenching star formation in galaxy spheroids [PDF]
Monthly notices of the Royal Astronomical Society, 2020 Quenched galaxies are often observed to contain a strong bulge component. The key question is whether this reflects a causal connection – can star formation be quenched dynamically by bulges or the spheroids of early-type galaxies?
J. Gensior +2 more
semanticscholar +1 more source
First Gaia dynamical model of the Milky Way disc with six phase space coordinates: a test for galaxy dynamics [PDF]
Monthly notices of the Royal Astronomical Society, 2019 We construct the first comprehensive dynamical model for the high-quality subset of stellar kinematics of the Milky Way disc, with full 6D phase-space coordinates, provided by the Gaia Data Release 2.
M. S. Nitschai +2 more
semanticscholar +1 more source
A Fresh Look at Narrow-angle Tail Radio Galaxy Dynamics, Evolution, and Emissions [PDF]
Astrophysical Journal, 2019 We present a 3D magnetohydrodynamic study of narrow-angle tail (NAT) radio galaxy (RG) dynamics, including passive cosmic ray electrons. We follow the evolution of a bipolar-jet RG in a persistent crosswind through hundreds of Myr. We confirm traditional
B. O’Neill +3 more
semanticscholar +1 more source
Evidence for Galaxy Dynamics Tracing Background Cosmology Below the de Sitter Scale of Acceleration [PDF]
, 2017 Galaxy dynamics probe weak gravity at accelerations below the de Sitter scale of acceleration , where c is the velocity of light and H is the Hubble parameter.
M. V. van Putten
semanticscholar +1 more source
Self-similar galaxy dynamics below the de Sitter scale of acceleration [PDF]
, 2018 Radial accelerations α in galaxy dynamics are now observed over an extended range in redshift that includes model calculations on galactic distributions of cold dark matter (CDM) in ΛCDM.
M. V. van Putten
semanticscholar +1 more source