Large Quasar Groups

Quasars are the brightest phenomenon in the entire universe, able to outshine any type of star, and even entire galaxies containing hundreds of billions of them. They are the product of monster black holes at the centres of large galaxies, and so when we find multi-billion light year clusters of quasars dotted around the early universe, we are forced to reconsider some of our most fundamental assumptions of cosmology.

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Do you use these videos to sleep or for night time watching? Check out the new sleeping space playlist, a collection of my most chilled out and ambient videos.
https://youtube.com/playlist?list=PLkoaIad9k4NIlsG6g-almaZH6MzR_T5eV

Want to learn more about super-sized cosmic structures like Large Quasar Groups? Check out my new Super Structures playlist!
https://youtube.com/playlist?list=PLkoaIad9k4NLVVYlXKCl8WXhkg9aOt6Zi

Thumbnail made by Wimptastic: https://twitter.com/Wimptastical

BACKGROUND MUSIC:
- Cylinder One - Chris Zabriskie
- Descent - The Tower of Light (YT Audio Library)
- Dreaming Blue - Sextile (YT Audio Library)
- Turn - The Tower of Light (YT Audio Library)
- There Are Many Different Kinds of Love - Chris Zabriskie
- Retro Dreamscape - Twin Musicom (YT Audio Library)
- Flecks of Light - The Tower of Light (YT Audio Library)
- Clouded - Public Memory (YT Audio Library)
- Trickling Up - Godmode (YT Audio Library)

Songs by Chris Zabriskie are licensed under Creative Commons 4.0 Licence:
- Artist: http://chriszabriskie.com/
- Source: http://chriszabriskie.com/cylinders/

FOOTAGE:
The space scenes in this video were captured using SpaceEngine Pro, a virtual universe simulator:
http://spaceengine.org/
Get SpaceEngine on Steam: https://store.steampowered.com/app/314650/SpaceEngine/

Stock footage provided by Videezy.com

- ESO Quasar Simulation Footage and Sound: https://www.eso.org/public/videos/eso1122a/
- NASA Redshift Animations: https://www.youtube.com/watch?v=wnSVBLXaoO8u0026t
- ESO Type 1a supernova https://www.youtube.com/watch?v=m1Wl_UtTEj0
- Redshift Expansion [Creative Commons]: https://www.youtube.com/watch?v=dLAPTNu2A_s

- Bright Halos around Quasars: By ESO/Borisova et al. - http://www.eso.org/public/images/eso1638a/, CC BY 4.0, https://commons.wikimedia.org/w/index.php?curid=52523638

SOURCES OF INFORMATION:
- Active Galaxies: https://www.astronomynotes.com/galaxy/s12.htm
- Ohio State University Astronomy Lecture 162, Quasars, by Professor Barbara Ryden: http://www.astronomy.ohio-state.edu/~ryden/ast162_8/notes36.html
- Hubble Surveying Quasars: https://hubblesite.org/contents/news-releases/1996/news-1996-35.html
- The Cosmological Principle
- Large Quasar Groups by Roger Clowes: http://articles.adsabs.harvard.edu/pdf/2001ASPC..232..108C
- Yadav's Homogeneity Scale: https://academic.oup.com/mnras/article/405/3/2009/967466?login=true)
- The Clowes-Campusano LQG: https://arxiv.org/pdf/1108.6221.pdf
- U1.11: https://arxiv.org/abs/1108.6221
- The Huge LQG: https://arxiv.org/pdf/1211.6256.pdf
- Seeing Patterns in Noise by Sheshadri Nadathur: https://arxiv.org/pdf/1306.1700.pdf
- More work by Roger Clowes (discoverer of the three LQGs): https://scholar.google.co.uk/citations?user=l4sEsIoAAAAJu0026hl=en

TIMESTAMPS
0:00 Introduction
2:00 What is a Quasar?
9:46 The Peak Quasar Epoch
11:50 The Search for Quasars
20:39 Large Quasar Groups
22:15 Cosmic Structures u0026 the Cosmological Principle
24:35 The Largest LQGs
27:34 Seeing Patterns In Noise