Friday, April 12, 2019
12:00 PM - 1:00 PM
Annenberg 105

Special Seminar in CMS

Imaging a Black Hole with the Event Horizon Telescope
Katherine (Katie) Bouman, Visiting Associate, Computing and Mathematical Sciences, Caltech,

This talk will present the methods and procedures used to produce the first results from the Event Horizon Telescope. It is theorized that a black hole will leave a "shadow" on a background of hot gas. Taking a picture of this black hole shadow could help to address a number of important scientific questions, both on the nature of black holes and the validity of general relativity. Unfortunately, due to its small size, traditional imaging approaches require an Earth-sized radio telescope. In this talk, I discuss techniques we have developed to photograph a black hole using the Event Horizon Telescope, a network of telescopes scattered across the globe. Imaging a black hole’s structure with this computational telescope requires us to reconstruct images from sparse measurements, heavily corrupted by atmospheric error.

For more information, please contact Diane Goodfellow by email at diane@cms.caltech.edu.