251 citations · 929 across the 23 of their papers we have counts for
23 papers
Signatures of Extended Dark Energy Parametrisations in Structure Formation under Background Constraints
Greco A. Peña, Mario H. Amante, Javier Chagoya +3
We study structure formation in alternative cosmological models constrained by background observations, including CDM, wCDM, the Chevallier-Polarski-Linder parametrisation and a…
The effects on structure of a momentum coupling between dark matter and quintessence
G. N. Candlish, Y. Jaffé
Given the mysterious nature of dark matter and dark energy, and the persistent tensions in cosmological data, it is worthwhile exploring more exotic physics in the dark sector, suc…
Simulations of cluster ultra-diffuse galaxies in MOND
Srikanth T. Nagesh, Jonathan Freundlich, Benoit Famaey +4
Ultra-diffuse galaxies (UDGs) in the Coma cluster have velocity dispersion profiles that are in full agreement with the predictions of Modified Newtonian Dynamics (MOND) in isolati…
Cosmological simulations of a momentum coupling between dark matter and quintessence
Daniela Palma, Graeme N. Candlish
Dark energy is frequently modelled as an additional dynamical scalar field component in the Universe, referred to as "quintessence", which drives the late-time acceleration. Furthe…
Hydrodynamical structure formation in Milgromian cosmology
Nils Wittenburg, Pavel Kroupa, Indranil Banik +2
We present the first hydrodynamical cosmological simulations in the HDM framework based on Milgromian dynamics (MOND) with light (11~eV) sterile neutrinos. HDM can explain th…
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 large-scale structure from non-Gaussian primordial perturbations
G. A. Peña, G. N. Candlish
The late-time effect of primordial non-Gaussianity offers a window into the physics of inflation and the very early Universe. In this work we study the consequences of a particular…
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…
Leavers and remainers: Galaxies split by group-exit
Nelvy Choque-Challapa, Rory Smith, Graeme Candlish +2
The disruption of substructure in galaxy clusters likely plays an important role in shaping the cluster population as a significant fraction of cluster galaxies today have spent ti…
Consequences of the external field effect for MOND disk galaxies in galaxy clusters
G. N. Candlish, R. Smith, Y. Jaffé +1
Galaxies within galaxy clusters are known to be subject to a wide variety of environmental effects, both gravitational and hydrodynamical. In this study, we examine the purely grav…
Discovery of ram-pressure stripped gas around an elliptical galaxy in Abell 2670
Yun-Kyeong Sheen, Rory Smith, Yara Jaffe +7
Studies of cluster galaxies are increasingly finding galaxies with spectacular one-sided tails of gas and young stars, suggestive of intense ram-pressure stripping. These so-called…
Phase-space Analysis in the Group and Cluster environment: Time since Infall and Tidal Mass Loss
Jinsu Rhee, Rory Smith, Hoseung Choi +4
Using the latest cosmological hydrodynamic N-body simulations of groups and clusters, we study how location in phase-space coordinates at can provide information on envir…
Photon paths in the hyperbolic topological black hole spacetime of conformal Weyl gravity
Graeme Candlish, Marco Olivares, Constanza Osses +1
In this work we find analytical solutions to the null geodesics in the hyperbolic topological black hole spacetime of conformal Weyl gravity in an invariant -plane given by the…
The velocity field in MOND cosmology
G. N. Candlish
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 structu…
MUSE-ings on AM1354-250: Collisions, Shocks and Rings
Blair C. Conn, L. M. R. Fogarty, Rory Smith +1
We present MUSE observations of AM1354-250, confirming its status as a collisional ring galaxy which has recently undergone an interaction, creating its distinctive shape. We analy…
The Sensitivity of Harassment to Orbit: Mass Loss from Early-Type Dwarfs in Galaxy Clusters
Rory Smith, Ruben Sanchez-Janssen, Michael A. Beasley +11
We conduct a comprehensive numerical study of the orbital dependence of harassment on early-type dwarfs consisting of 168 different orbits within a realistic, Virgo-like cluster, v…
The difficult early stages of embedded star clusters and the importance of the pre-gas expulsion virial ratio
J. P. Farias, R. Smith, M. Fellhauer +4
We examine the effects of gas-expulsion on initially substructured distributions of stars. We perform N-body simulations of the evolution of these distributions in a static backgro…
Simple and accurate modelling of the gravitational potential produced by thick and thin exponential disks
Rory Smith, Chris Flynn, Graeme N. Candlish +2
We present accurate models of the gravitational potential produced by a radially exponential disk mass distribution. The models are produced by combining three separate Miyamoto-Na…
BUDHIES II: A phase-space view of HI gas stripping and star-formation quenching in cluster galaxies
Yara L. Jaffe, Rory Smith, Graeme N. Candlish +3
We investigate the effect of ram-pressure from the intracluster medium on the stripping of HI gas in galaxies in a massive, relaxed, X-ray bright, galaxy cluster at z=0.2 from the…
RAyMOND: An N-body and hydrodynamics code for MOND
G. N. Candlish, R. Smith, M. Fellhauer
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 constrain…
Phase mixing due to the Galactic potential: steps in the position and velocity distributions of popped star clusters
G. N. Candlish, R. Smith, M. Fellhauer +3
As star clusters are expected to form with low star formation efficiencies, the gas in the cluster is expelled quickly and early in their development: the star cluster "pops." This…
On the smoothness of the multi-BMPV black hole spacetime
Graeme N. Candlish
We demonstrate that, in a multi-BMPV black hole spacetime, the event horizon is not smooth. We explicitly show that for a simpler configuration comprising a line of static extremal…
On the smoothness of static multi-black hole solutions of higher-dimensional Einstein-Maxwell theory
Graeme N. Candlish, Harvey S. Reall
Previous work has shown that static multi-black hole solutions of higher-dimensional Einstein-Maxwell theory do not possess smooth horizons. We show that the lack of smoothness is…