Fireworks from Black Holes Devouring Stars - Yuhan Yao - 01/20/2023

While supermassive black holes themselves do not emit light, they can be "awakened" when a star gets too close and is torn apart by their powerful gravitational forces. Join us for a 30-minute lecture on how black holes consume stars, followed by a panel Q&A consisting of several astrophysicists to answer your questions about space science. Timestamps below:

00:00 Start of Stream
00:42 Announcements
04:59 Intro to Black Holes Presentation
05:38 Black Holes Presentation
35:10 Q&A for Black Holes Presentation
35:36 "How large are these black holes and their disks?"
36:24 "Do tidal disruption events emit gravitational waves?"
37:12 "Will you play the animation again?"
37:40 "Are the jets from the star or black hole?"
38:03 "What is the solar corona?"
39:55 "Could TDEs create a quark-gluon plasma around the black hole?"
41:39 "What happens to the stars' cores during the tidal disruption?"
42:49 Intermission
46:50 Q&A Panel Introductions
50:05 "What are gravitational waves?"
53:06 "Are gravitational waves affected by the Doppler effect?"
54:06 "When black holes collide, how long does it take for us to observe them?"
55:55 "How much does spacetime stretch and expand?"
57:25 "Do stars get brighter when they are devoured by a black hole?"
58:23 "What does the interior of a black hole look like?"
1:01:50 "What skillsets are important for becoming an astrophysicist?"
1:06:32 "Could there be a quark-gluon plasma around a black hole?"
1:11:10 "Will we ever directly detect dark matter?"
1:15:23 "Have any panelists been science advisors for any movies?"
1:21:30 "Does time dilation work additively?"
1:23:58 "Tell us about this new comet."
1:30:36 "Do black holes create anything?"
1:33:40 "Do tidal disruption events create new elements?"
1:38:24 "Is the shadow of the black hole larger than the BH itself?"
1:40:42 "Can weakly interacting massive particles be dark matter?"
1:43:31 "Will we ever find Planet Nine?"
1:49:55 "Was gravity the first thing in the universe?"
1:52:36 "What's the connection between gravity and time?"
1:56:15 "Will Earth's gravity ever change?"
1:58:04 "Why do outer planets have lighter elements and inner planets have heavier elements?"
2:02:32 Concluding Remarks

Speaker:

[bryandraughn]

Excellent presentation and production.
Very informative!

[jeffreylanz]

Cameron, can you spell the name of the theoretical type of dark matter brought up around 1:13:00? I can barely hear what she said

[Kingleer]

Hey Cameron: Would it be possible to live stream all your "Astronomy On Tap" events here on You Tube also?