Orateur
Description
The Simons Observatory (SO) is a cosmic microwave background (CMB) experiment located in the Atacama Desert in Chile, comprising multiple Small Aperture Telescopes (SATs) and a Large Aperture Telescope (LAT). The SATs are specifically designed to target primordial B-mode polarization sourced by tensor perturbations in the early Universe, conducting a focused small-area survey with high sensitivity. The SO mid-frequency SATs saw first light in late 2023 and have since been conducting Initial Science Observations, a dedicated campaign of measurements obtained following commissioning that will form the basis of a series of forthcoming papers, spanning telescope performance characterization, map-making, and cosmological parameter estimation. In this talk, I will present an overview of the current status of these observations and early data from the SATs, along with the planned next steps toward SO's key science goals.
