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Constrained simulations of the local Universe with Modified Gravity
Krishna Naidoo, Wojciech A. Hellwing, Maciej Bilicki +3
We present a methodology for constructing modified gravity (MG) constrained simulations of the local Universe using positions and peculiar velocities from the CosmicFlows data set.…
Dark matter solution to the and tensions, and the integrated Sachs-Wolfe void anomaly
Krishna Naidoo, Mariana Jaber, Wojciech A. Hellwing +1
We consider a phenomenological model of dark matter with an equation-of-state that is negative and changing at late times. We show this couples the and tensions…
Galaxy and halo angular clustering in LCDM and Modified Gravity cosmologies
Paweł Drozda, Wojciech A. Hellwing, Maciej Bilicki
Using a suite of -body simulations we study the angular clustering of galaxies, halos, and dark matter in and Modified Gravity (MG) scenarios. We consider…
Differentiating small-scale subhalo distributions in CDM and WDM models using persistent homology
Jessi Cisewski-Kehe, Brittany Terese Fasy, Wojciech Hellwing +3
The spatial distribution of galaxies at sufficiently small scales will encode information about the identity of the dark matter. We develop a novel description of the halo distribu…
COWS: A filament finder for Hessian cosmic web identifiers
Simon Pfeifer, Noam I. Libeskind, Yehuda Hoffman +3
The large scale galaxy and matter distribution is often described by means of the cosmic web made up of voids, sheets, filaments and knots. Many different recipes exist for identif…