Niall MacCrann

Dr Niall MacCrann is a Research Fellow at the Department of Applied Mathematics and Theoretical Physics (DAMTP), University of Cambridge. His research focuses on cosmology and astrophysics, particularly in the areas of gravitational lensing, dark energy, and large-scale structure.

• Research Areas: Weak lensing, cosmic shear, galaxy clustering, CMB lensing, extragalactic foregrounds, dark energy constraints
• Publications: 15+ peer-reviewed articles (2014-2024) with primary affiliations to Dark Energy Survey and Atacama Cosmology Telescope collaborations
• Contact: Email: nm746@damtp.cam.ac.uk | Room: B1.11 | Tel: 01223 337941

Dr MacCrann's recent work (2024) involves advanced analysis of CMB lensing through cross-correlations with galaxy surveys, addressing extragalactic foreground contamination in precision cosmology. Earlier studies (2023-2016) focus on galaxy-galaxy lensing, magnification bias, and cosmological parameter estimation using data from the Dark Energy Survey.

His research methodology combines N-body simulations, systematic error mitigation, and weak lensing mass calibration techniques. Current projects involve cross-calibrating multiple cosmological probes including cosmic shear, Baryon Acoustic Oscillations, and redshift distribution analysis.