# The velocity field in MOND cosmology

@article{Candlish2016TheVF, title={The velocity field in MOND cosmology}, author={Graeme N. Candlish}, journal={Monthly Notices of the Royal Astronomical Society}, year={2016}, volume={460}, pages={2571-2585} }

The recently developed code for N-body/hydrodynamics simulations in Modified Newtonian Dynamics (MOND), known as RAyMOND, is used to investigate the consequences of MOND on structure formation in a cosmological context, with a particular focus on the velocity field. This preliminary study investigates the results obtained with the two formulations of MOND implemented in RAyMOND, as well as considering the effects of changing the choice of MOND interpolation function, and the cosmological… Expand

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IB was supported by Science and Technology Facilities Council studentship 1506672. The work of DOR was enabled by Royal Astronomical Society undergraduate research bursary 6390/302/001.

#### References

SHOWING 1-10 OF 65 REFERENCES

RAyMOND: an N-body and hydrodynamics code for MOND

- Physics
- 2015

The LCDM concordance cosmological model is supported by a wealth of observational evidence, particularly on large scales. At galactic scales, however, the model is poorly constrained and recent… Expand

Galactic haloes in MONDian cosmological simulations

- Physics
- 2004

In this paper, a series of high-resolution N-body simulations is presented in which the equations of motion have been changed to account for modified Newtonian dynamics (MOND). It is shown that a… Expand

The abundance of galaxy clusters in MOND: Cosmological simulations with massive neutrinos

- Physics
- 2011

We present a new Particle-Mesh cosmological N-body code for accurately solving the modified Poisson equation of the Quasi Linear formulation of MOND. We generate initial conditions for the Angus… Expand

Relativistic gravitation theory for the MOND paradigm

- Physics
- 2004

The modified newtonian dynamics (MOND) paradigm of Milgrom can boast of a number of successful predictions regarding galactic dynamics; these are made without the assumption that dark matter plays a… Expand

Galactic Halos in MONDian Cosmological Simulations

- Physics
- 2006

We present results derived from a high-resolution cosmological N -body simulation in which the equations of motion have been changed to account for MOdified Newtonian Dynamics (MOND). It is shown… Expand

Cosmological structure formation under MOND: a new numerical solver for Poisson's equation

- Physics
- 2008

We present a novel solver for an analogue to Poisson's equation in the framework of modified Newtonian dynamics (MOND). This equation is highly non-linear and hence standard codes based upon tree… Expand

Cosmological simulations in MOND: the cluster scale halo mass function with light sterile neutrinos

- Physics
- 2013

We use our Modified Newtonian Dynamics (MOND) cosmological particle-mesh N-body code to investigate the feasibility of structure formation in a framework involving MOND and light sterile neutrinos in… Expand

Modified Newtonian Dynamics (MOND): Observational Phenomenology and Relativistic Extensions

- Physics, Medicine
- Living reviews in relativity
- 2012

It is shown that many of these puzzling observations are predicted by one single relation — Milgrom’s law — involving an acceleration constant a0 on the order of the square-root of the cosmological constant in natural units. Expand

Modified Newtonian dynamics of large-scale structure

- Physics
- 2002

We examine the implications of modified Newtonian dynamics (MOND) on the large-scale structure in a Friedmann-Robertson-Walker universe. We employ a 'Jeans swindle' to write a MOND-type relationship… Expand

Large scale structure in Bekenstein's theory of relativistic modified Newtonian dynamics.

- Physics, Medicine
- Physical review letters
- 2006

It is shown that it may be possible to reproduce observations of the cosmic microwave background and galaxy distributions with Bekenstein's theory of MOND, and the evolution of the scalar field is akin to that of tracker quintessence fields. Expand