Astronomy with Gravitational Waves

on YouTube ↗22m

" summary

LIGO and Virgo build 3–4 km laser interferometers that measure strains as small as 10^-21 and they detect compact mergers using open code like PyCBC. A 2015 binary black hole with ~36 and ~29 solar masses at ~1.4 billion light years produces the short chirp matched by templates; a binary neutron star produces a longer sweep and released ejecta seen as a gamma-ray burst ~1.7 seconds after the GW and an optical transient found by Swope/Magellan.

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" chapters (14)

1. 0:00Start
2. 1:24Gravitational Waves
3. 3:57Gravitational Waves Are Produced by Moving Masses
4. 4:51Centrifuge at Nasa
5. 10:40Binary Black Hole Merger
6. 11:25Black Holes
7. 12:02Neutron Star
8. 15:08Gamma-Ray Burst
9. 15:33Time Delay
10. 16:12Optical Image
11. 17:29Process Nucleosynthesis
12. 17:56Beta Beta Decay
13. 20:06What's Coming Next
14. 20:42Gravitational Wave Detectors in Space

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