Rutgers University Astrophysics Colloquium

Large galaxy surveys like the Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST) are changing how we do cosmology – the study of the evolution of our universe. Focusing on probes of Dark Energy, I will discuss some of the new undertakings within the Rubin framework, including a community-driven optimization of the telescope survey strategy that enables pre-survey mitigation of systematics. I will also recap how we extract competitive cosmology constraints from observations like galaxy clustering before delving into some new tools and analyses to address measurement uncertainties that affect our constraints. Finally, I will discuss cluster clustering, a cosmology probe particularly enabled by the LSST.