How Black Holes Kill Galaxies
Summary
This episode explores the tight correlation between supermassive black holes and their host galaxies, a long-standing astrophysical conundrum. It explains how black holes likely regulate galaxy growth through quasar feedback, which heats or expels gas to quench star formation. The discussion covers the cosmic history of black hole growth and star formation, noting they peaked simultaneously around 10 billion years ago. The segment concludes with brief answers to listener questions regarding radioactive decay and the stability of strange matter.
Topics discussed
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Supermassive Black Holes in Galaxies
The Black Hole-Galaxy Mass Correlation
Bottom-Up Galaxy Formation Theory
Growth of Black Holes and Galaxies
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Why the Correlation is Surprising
Quenching Star Formation in Ellipticals
Quasar Winds and Jets Mechanism
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Feedback Loop and Balancing Act
Cosmic History of Star Formation
Peak Quasar Epoch and Conclusion
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Q&A: Fermi Paradox and Half-Lives
Q&A: Strange Matter Stability
Q&A: Cat Behavior and Allergies
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