3 papers
astro-ph.CO2025
Dynamics of pairwise motions in the fully non-linear regime in LCDM and Modified Gravity cosmologies
Mariana Jaber, Wojciech A. Hellwing, Jorge E. GarcÃa-Farieta +2
In contrast to our understanding of density field tracers, the modelling of direct statistics pertaining to the cosmic velocity field remains open to significant opportunities for…
astro-ph.GA2025
Hierarchical structure of the cosmic web and galaxy properties
Mariana Jaber, Marius Peper, Wojciech A. Hellwing +2
Voids possess a very complex internal structure and dynamics. Using -body simulations we study the hierarchical nature of sub-structures present in the cosmic web (CW). We use t…
astro-ph.CO2024
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…