Abstract
Over the last few decades science has gained a remarkable insight into the workings of
the early universe. Modern CMB measurements and galaxy surveys have provided us
with precise estimations of both the statistical properties of the universe at the time
of decoupling, as well as the distribution of large scale structures, such as individual
galaxies and clusters. However, there is a significant gap between the time of the first
structures and the ones bright enough to be observed by modern surveys. As the first
luminous structures heralded the Epoch of Reionization, thus ending the dark ages, the
detection and measurement of their statistical distribution may help to shed further
light on several different science areas, such as galaxy evolution and complementing
precision experiments, such as CMB projects.
In this thesis we will present the work of the CO Mapping Array Pathfinder experiment,
which through the technique of Line-Intensity mapping, aims to measure these
old large scale structures. Special emphasis will be placed on the numerical pipeline,
created and maintained by the Oslo group, which processes the data in order to create
sky maps of the observations.
Finally, we present the preliminary results of the pipeline where we conclude that
through simple filters, we are able to remove the vast majority of the correlated noise.
This in turn enables the implementation of a Naive filtering and Binning map-making
scheme, which significantly reduces the computational time of the pipeline.
Veileder: Professor Hans Kristian Kamfjord Eriksen, Institutt for teoretisk astrofysikk, UiO
Intern sensor: Professor David F. Mota, Institutt for teoretisk astrofysikk, UiO
Ekstern sensor: Senior scientist Kieran A. Cleary, California Institute of Technology