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[Interview] Black Holes Spin. Now, How Can We Measure That?
Black holes are defined by only three parameters: mass, charge and spin. We know that black holes spin. But how can we measure that? What tools and methods are at our disposal? Answering these questions with Dr Ruth Daly, Professor of Physics at Penn State University.
📃 New Black Hole Spin Values for Sagittarius A* Obtained with the Outflow Method
https://arxiv.org/abs/2310.12108
🦄 Support us on Patreon:
https://patreon.com/universetoday
📚 Suggest books in the book club:
https://www.goodreads.com/group/show/1198440-universe-today-book-club
00:00 Intro
01:11 Black Holes' mass
06:22 Jets from Quasars
09:00 Being near a black hole
10:35 Measuring the Sgr A
18:56 Spinning black holes
26:41 Orientation of Sag A
29:02 Energy of black holes
32:33 Final thoughts
📺 VIDEO VERSION
https://youtu.be/9ArfZdNDtzY
📰 EMAIL NEWSLETTER
Read by 60,000 people every Friday. Written by Fraser. No ads.
Subscribe. It's FREE: https://universetoday.com/newsletter
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Astronomy Cast: http://www.astronomycast.com/
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📩 CONTACT FRASER
⚖️ LICENSE
Creative Commons Attribution 4.0 International (CC BY 4.0)
Support Universe Today Podcast
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By Fraser Cain
4.7
513513 ratings
Black holes are defined by only three parameters: mass, charge and spin. We know that black holes spin. But how can we measure that? What tools and methods are at our disposal? Answering these questions with Dr Ruth Daly, Professor of Physics at Penn State University.
📃 New Black Hole Spin Values for Sagittarius A* Obtained with the Outflow Method
https://arxiv.org/abs/2310.12108
🦄 Support us on Patreon:
https://patreon.com/universetoday
📚 Suggest books in the book club:
https://www.goodreads.com/group/show/1198440-universe-today-book-club
00:00 Intro
01:11 Black Holes' mass
06:22 Jets from Quasars
09:00 Being near a black hole
10:35 Measuring the Sgr A
18:56 Spinning black holes
26:41 Orientation of Sag A
29:02 Energy of black holes
32:33 Final thoughts
📺 VIDEO VERSION
https://youtu.be/9ArfZdNDtzY
📰 EMAIL NEWSLETTER
Read by 60,000 people every Friday. Written by Fraser. No ads.
Subscribe. It's FREE: https://universetoday.com/newsletter
🎧 PODCASTS
Universe Today: https://universetoday.fireside.fm/
Astronomy Cast: http://www.astronomycast.com/
🤳 OTHER SOCIAL MEDIA
Twitter: https://twitter.com/fcain
Twitter: https://twitter.com/universetoday
Facebook: https://facebook.com/universetoday
Instagram: https://instagram.com/universetoday
📩 CONTACT FRASER
⚖️ LICENSE
Creative Commons Attribution 4.0 International (CC BY 4.0)
Support Universe Today Podcast
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