Physics Colloquium

Cosmology from the Cosmic Microwave Background

The cosmic microwave background (CMB) is our earliest image of the universe. I will show results from the Atacama Cosmology Telescope, giving us a new high-resolution measurement of the CMB over half the sky, and will describe what this has told us about the current model for the universe. I will then talk about observations now underway with the Simons Observatory, a new millimeter-wave observatory at the same location in Chile. With its smaller telescopes we are seeking a signal imprinted by gravitational waves generated in the early universe. Its largest telescope will measure the finer scales of the CMB with increased sensitivity, probing the early universe as well as revealing the later-formed cosmic web of gas and dark matter.

Join via Zoom:
https://caltech.zoom.us/j/84497014003
Meeting ID: 844 9701 4003

The colloquium is held in Feynman Lecture Hall, 201 E. Bridge.