Gaussian processes used for type Ia supernova cosmology
Using type Ia supernovae, the discovery that the expansion of the universe is accelerating was made possible in the late 1990's. Since then the supernova cosmology community has, among other things, focused on lowering the systematic error, currently dominating the error budget, in order to differentiate between different theoretical models. One way to do this is to study large samples of supernovae in the nearby universe and investigate their observational signatures. We are planning to use data from the Palomar transient factory and intermediate transient factory as well as its sucessor the Zwicky transient fascility which provide a large sample size of nearby supernovae.