Uploaded January 2023 | Updated September 2026, 2 weeks ago
Guest Speaker: Lisa Drummond, Ph.D. candidate, MIT
Summary: In this video, you will learn about how astronomers listen to black holes with gravitational waves. As a prelude to the talk, Lisa briefly discusses the theory of gravity, spacetime, general relativity, gravitational waves, and black holes. Lisa then shows us how it takes some disruption/interaction with spacetime to create gravitational waves. Her area of interest is the study of gravitational waves produced by the merger of two black holes, especially those involving extreme mass ratios. The frequency of gravitational waves converted into sound waves produces a cosmic ‘chirp.’ If you are interested in black holes and gravitational waves, this video will help you elucidate these concepts!
iTelescope itelescope.net
LIGO https://www.ligo.caltech.edu/page/what-are-gw
Chapters
0:00 Introduction
1:30 General Relativity
3:20 Space Time
6:35 Using gravitational waves to listen to the Universe
7:48 How do gravitational waves distort mater?
10:41 How to detect gravitational waves
12:04 The fist detected gradational wave
12:56 Black holes
19:01 What if you shine a flashlight on a black hole?
21:26 Anatomy of a black hole - a more complete picture
22:30 Ways to observe black holes
26:24 Objects that produce gradational waves
28:33 What does not produce gradational waves?
31:39 merging blackholes
33:07 Gravitational wave chirp signal
34:40 What do the gravitational waves look like when they merge.
35:38 What type of black holes have we seen os far?
44:10 Electromagnetic spectrum vs gravitational wave spectrum
46:46 LISA next steps in gravitational wave detection
48:02 Summary
iTelescope itelescope.net
#iTelescope
#astrophotography
#deepsky
#astro
#astronomy
#cosmology
#gravational waves
Guest Speaker: Lisa Drummond, Ph.D. candidate, MIT
Summary: In this video, you will learn about how astronomers listen to black holes with gravitational waves. As a prelude to the talk, Lisa briefly discusses the theory of gravity, spacetime, general relativity, gravitational waves, and black holes. Lisa then shows us how it takes some disruption/interaction with spacetime to create gravitational waves. Her area of interest is the study of gravitational waves produced by the merger of two black holes, especially those involving extreme mass ratios. The frequency of gravitational waves converted into sound waves produces a cosmic ‘chirp.’ If you are interested in black holes and gravitational waves, this video will help you elucidate these concepts!
iTelescope itelescope.net
LIGO https://www.ligo.caltech.edu/page/what-are-gw
Chapters
0:00 Introduction
1:30 General Relativity
3:20 Space Time
6:35 Using gravitational waves to listen to the Universe
7:48 How do gravitational waves distort mater?
10:41 How to detect gravitational waves
12:04 The fist detected gradational wave
12:56 Black holes
19:01 What if you shine a flashlight on a black hole?
21:26 Anatomy of a black hole - a more complete picture
22:30 Ways to observe black holes
26:24 Objects that produce gradational waves
28:33 What does not produce gradational waves?
31:39 merging blackholes
33:07 Gravitational wave chirp signal
34:40 What do the gravitational waves look like when they merge.
35:38 What type of black holes have we seen os far?
44:10 Electromagnetic spectrum vs gravitational wave spectrum
46:46 LISA next steps in gravitational wave detection
48:02 Summary
iTelescope itelescope.net
#iTelescope
#astrophotography
#deepsky
#astro
#astronomy
#cosmology
#gravational waves
