Audio / Video

New Insights into the Cosmic Growth of Supermassive Black Holes

  • 01:01:06


Using a "wedding cake" combination of multi-wavelength X-ray+infrared+optical surveys, we measure the growth of supermassive black holes at the centers of galaxies over the ~12 billion years. Most actively growing black holes ("Active Galactic Nuclei" or AGN) are heavily obscured and thus look like inactive galaxies in optical surveys, so our census has effectively quadrupled the amount of accretion, and thus the amount of energy deposited in AGN host galaxies. However, contrary to leading models, our data suggest that for only a minority of galaxies does merger-triggered AGN "feedback" cause rapid quenching of star formation.



New Insights into the Cosmic Growth of Supermassive Black Holes


University of California, Berkeley. Dept. of Physics


Berkeley, CA, University of California, Berkeley, Dept. of Physics, April 1, 2019

Full Collection Name

Physics Colloquia






1 streaming video file

Other Physical Details

digital, sd., col.


Physics Library


Recorded at a colloquium held on April 1, 2019, sponsored by the Dept. of Physics, University of California, Berkeley.

originally produced as an .mts file in 2019

Speakers: Meg Urry.

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Physics Colloquia


colloquia/4-1-19Urry.mp4 01:01:06

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