Pulsing Star That Changes Nebula Colors Every 4 Years
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Hello and welcome! My name is Anton and in this video, we will talk about a strange phenomenon of light echoes
Links:
https://arxiv.org/pdf/2311.01593.pdf
https://en.wikipedia.org/wiki/Vista_Variables_in_the_Via_Lactea
https://blog.galaxyzoo.org/2009/05/01/shes-an-astronomer-hanny-van-arkel/
https://en.wikipedia.org/wiki/Light_echo
https://en.wikipedia.org/wiki/Hanny%27s_Voorwerp
https://academic.oup.com/mnras/article/492/4/4847/5709937
https://ui.adsabs.harvard.edu/abs/2014ATel.5954....1D/abstract
https://academic.oup.com/mnras/article/505/2/1992/6294924
https://arxiv.org/abs/1811.02265
V838: https://youtu.be/A60fsMHsSJA
Faster than light travel: https://youtu.be/yHCrEXfOYF0
Tabby Star update: https://youtu.be/Hlgq72RuMZ0
Super dimming star: https://youtu.be/wdkdazR2F9U
Milky Way echoes: https://youtu.be/yNEuPBe2mjA
Magellanic stream echo: https://youtu.be/YwMV8zEYPIU
#astronomy #echo #lightecho
0:00 Strange nebula that pulsates?
1:30 Survey that discovered the new mystery
2:35 First strange object from a decade ago: VVV WIT 01
3:20 Other unusual objects
4:15 New object VVV WIT 12 and why it's strange
5:39 Future studies and what to focus on
6:10 Other light echo phenomena that are extreme
7:35 Central black hole echoes
8:40 Accidental discovery of a galactic light echo - Hanny's Woorverp
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Images/Videos:
RobertoK.Saito et al. 2023
Meli thev - NOAO Data lab CC BY-SA 4.0 https://en.wikipedia.org/wiki/Light_echo#/media/File:Eta_Carinae_light_echo.gif
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