Research Projects

Galaxy property and data driven intrinsic alignment models in the Dark Energy Science Collaboration (DESC).

McCullough et al. (in prep)

Confronting cosmic shear astrophysical uncertainties -- informed priors on baryon feedback and intrinsic alignment. See the data release page.

Bigwood, McCullough, Siegel, Amon et al. 2025

Direct measurement of galaxy intrinsic alignment with the Dark Energy Spectroscopic Instrument (DESI). See the data release page.

Siegel, McCullough, Amon et al. 2025

A cosmic shear reanalysis selecting on blue galaxies in DES Y3 to probe cosmic structure and mitigate intrinsic alignment. See the data release page.

McCullough et al. 2024

Co-Principal Investigator of the 4MOST Complete Calibration of the Color-Redshift Relation (4C3R2) survey on the 4-metre Multi-Object Spectroscopic Telescope (4MOST).

Gruen & McCullough et al. 2023
McCullough et al. (in prep.)

Targeting observations of galaxies to understand the relationship between distance and flux with a spare fiber program on the Dark Energy Spectroscopic Instrument (DESI). See the data release page.

McCullough et al. 2024

Understanding shear bias - the relationship between shape and graviational shear - in the presence of galaxy-galaxy blending with image simulations for the Dark Energy Survey (DES) Y3 Cosmology results.

MacCrann, Becker, McCullough et al. 2021