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Mitigating Nonlinear Systematics in Weak Lensing Surveys II: Stability and Diagnostics with Intrinsic Alignment
Shiming Gu, Ludovic van Waerbeke, Francis Bernardeau +1
The Bernardeau-Nishimichi-Taruya (BNT) transform provides a powerful framework for analysing tomographic cosmic shear data by improving the localization of shear correlations in ph…
Forecasting local Primordial Non-Gaussianities from UNIONS Lyman-Break Galaxies and Planck CMB lensing
Constantin Payerne, William d'Assignies, Christophe Yèche +4
Local Primordial non-Gaussianities (PNGs), characterized by , provide a powerful window into the physics of inflation. Cross-correlating high-redshift tracer…
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…
Galaxies OBserved as Low-luminosity Identified Nebulae (GOBLIN): a catalog of 43,000 high-probability dwarf galaxy candidates in the UNIONS survey
Nick Heesters, David Chemaly, Oliver Müller +9
The detection of low surface brightness galaxies beyond the Local Group poses significant observational challenges, yet these faint systems are fundamental to our understanding of…
UNIONS: The Ultraviolet Near-Infrared Optical Northern Survey
Stephen Gwyn, Alan W. McConnachie, Jean-Charles Cuillandre +86
The Ultraviolet Near-Infrared Optical Northern Survey (UNIONS) is a "collaboration of collaborations" that is using the Canada-France-Hawai'i Telescope, the Pan-STARRS telescopes,…
Unions with UNIONS: Using galaxy-galaxy lensing to probe galaxy mergers
Isaac Cheng, Jack Elvin-Poole, Michael J. Hudson +12
We use galaxy-galaxy lensing to investigate how the dark matter (DM) haloes and stellar content of galaxies with and $10 \leq \log_{10}(M_\star/\mathrm{M}_…