16 papers
Anisotropic Counts-in-Cells in Redshift Space: A New Route to Cosmological Constraints from Galaxy Surveys
PaweÅ Drozda, Wojciech A. Hellwing, Maciej Bilicki
We introduce a novel extension of the volume-averaged correlation function (VACF) framework by replacing the traditional spherical smoothing kernels with anisotropic, ellipsoidal w…
Skewness as a Probe of Gravity: Real and Redshift Space Counts-In-Cells
PaweÅ Drozda, Wojciech A. Hellwing, Maciej Bilicki
We study the counts-in-cells reduced skewness for dark matter, halo, and galaxy distributions in both real and redshift space, using the ELEPHANT ($\textit{Extended LEnsing P…
Dwarf stellar haloes: a powerful probe of small-scale galaxy formation and the nature of dark matter
Alis J. Deason, Sownak Bose, Azadeh Fattahi +3
We use N-body cosmological simulations and empirical galaxy models to study the merger history of dwarf-mass galaxies (with M_halo~10^10 M_Sun). Our input galaxy models describe th…
Galaxy and halo angular clustering in LCDM and Modified Gravity cosmologies
PaweÅ 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 conside…
Caught in the Cosmic Web: Environmental Impacts on the Halo Substructure Boosts to Dark Matter Annihilation Signals
Feven Markos Hunde, Wojciech A. Hellwing, Maciej Bilicki
The annihilation of dark matter (DM) particles is expected to produce Standard Model particles, providing a potential indirect signature of DM. The clumpy substructure of DM haloes…
Large Scale Structure and Environmental Effects on Dwarf Galaxy Growth
Mac M. McMullan, Sownak Bose, Azadeh Fattahi +3
Dwarf galaxies serve as key models for understanding galaxy assembly in the early universe, with their final properties influenced by environmental factors. Using the dark matter-o…