The Outflow Method for Measuring Black Hole Spin

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

frasercain@gmail.com

⚖️ LICENSE

Creative Commons Attribution 4.0 International (CC BY 4.0)

Support Universe Today Podcast