Placing Constraints on Anisotropic Expansion with Type Ia Supernovae and improving Cosmological Parameter Estimation with Bayesian Hierarchical Models

Lead Research Organisation: Imperial College London
Department Name: Dept of Physics


In this thesis, I aim explore the possibility of any anisotropic deviations in the rate of expansion of the universe from the currently accepted isotropic Lambda Cold Dark Matter (LCDM) cosmology as well as investigate phenomenological models that can naturally lead to such anisotropies arising. This analysis is done within the framework of the Bayesian Hierarchical Model BAHAMAS. We then look to improve the BAHAMAS framework by including the modelling of selection effects on spectroscopically classified supernovae to address the issue of Malmquist bias within supernovae datasets


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Haworth T (2018) The FRIED grid of mass-loss rates for externally irradiated protoplanetary discs in Monthly Notices of the Royal Astronomical Society

Studentship Projects

Project Reference Relationship Related To Start End Student Name
ST/R504816/1 30/09/2017 29/09/2021
1993451 Studentship ST/R504816/1 30/09/2017 29/09/2021 Wahidur RAHMAN