3 papers
astro-ph.CO2026
Lensing the darkness: The matter density profile in cosmic voids from UNIONS
Hunter L. Martin, Michael J. Hudson, Alex Woodfinden +14
We measure the distribution of matter contained within the emptiest regions of the Universe: cosmic voids. We use the large overlap between the Ultraviolet Near-Infrared Optical No…
astro-ph.CO2025
Constraining cosmological parameters using density split lensing and the conditional stellar mass function
Pierre A. Burger, Darshak A. Patel, Michael J. Hudson
In this work, we develop a simulation-based model to predict the excess surface mass density (ESD) depending on the local density environment. Using a conditional stellar mass func…
astro-ph.CO2024
Cosmological parameters from the joint analysis of Density Split and Second Order Statistics: an Emulator based on the Halo Occupation Distribution
Pierre A. Burger, Enrique Paillas, Michael J. Hudson
In this work, we develop a simulation-based model to predict the density split (DSS) and second-order shear and clustering statistics. A simulation-based model has the potential to…