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Poster for talk

Saturday Physics for Everyone; Charles Gammie (UIUC), "Portrait of a Black Hole"

Event Type
Seminar/Symposium
Sponsor
Physics Department
Location
141 Loomis Laboratory
Date
Oct 8, 2022   10:15 am  
Speaker
Charles Gammie
Contact
Irene Lira-Andsager
E-Mail
andsagr2@illinois.edu
Phone
217-333-6186
Views
170
Originating Calendar
Physics - Saturday Physics for Everyone

The center of our Milky Way galaxy contains a black hole that is millions of times as massive as the Sun. The Event Horizon Telescope (EHT) collaboration recently made an image of this black hole using radio antennas at sites distributed around the globe, including at the South Pole, in the Atacama Desert of northern Chile, and on Mauna Kea in Hawaii.

The image is ring shaped, just like the EHT collaboration's earlier image of a black hole outside the Milky Way. I will talk about how the image was made, why it looks the way it does, and what it means for our understanding of the center of our galaxy.

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