Constraining Cosmological Models Using Non-Gaussian Perturbations in the Cosmic Microwave Background
- Author(s): O'Bryan, Jon
- Advisor(s): Cooray, Asantha
- et al.
We study non-Gaussian distributions in temperature fluctuations of the cosmic microwave
background radiation. We introduce a novel way of measuring spatial variations in the
fine-structure constant with these tools. We also lay out the method of measuring the first
non-Gaussian moment using the three-point correlation function and an optimized estimator
and apply these methods to the Planck CMB maps.