Questions and Answers
What is the largest-known structure in the observable universe?
Hercules-Corona Borealis Great Wall
When was the Hercules-Corona Borealis Great Wall discovered?
November 2013
What is the Giant GRB Ring?
A ring of 9 gamma-ray bursts
Who led the discovery of the Giant GRB Ring?
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What does Huge LQG refer to?
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What is the size of the Giant Arc?
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Where is U1.11 located?
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What is the Clowes-Campusano LQG composed of?
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What is the South Pole Wall?
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What survey identified the BOSS Great Wall?
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Study Notes
Hercules-Corona Borealis Great Wall
- Largest-known structure in the observable universe, approximately 10 billion light-years long.
- Discovered in November 2013 by a team of astronomers using data from Swift Gamma-Ray Burst Mission.
- Contains a higher concentration of gamma-ray bursts (GRBs) than the expected average.
- Exceeds the size of the prior Huge-LQG by about two times.
Giant GRB Ring
- Comprises a ring of 9 gamma-ray bursts (GRBs).
- Associated with one of the largest known cosmic structures.
- Discovered in July 2015 with data from gamma-ray and X-ray telescopes, notably the Swift Spacecraft.
Huge LQG
- Known as the Huge Large Quasar Group, consists of 73 quasars.
- Measures about 4 billion light-years across; initially identified as the largest known structure in the universe.
The Giant Arc
- Discovered in June 2021, spans over 3.3 billion light-years.
- Challenges the cosmological principle of homogeneity and isotropy in the universe.
- Composed of galaxies, galactic clusters, gas, and dust; located 9.2 billion light-years away.
U1.11
- A large quasar group situated in the constellations of Leo and Virgo.
- Estimated maximum diameter is 780 Mpc and contains 38 quasars.
- Discovered in 2011 during the Sloan Digital Sky Survey.
Clowes-Campusano LQG
- Consists of 34 quasars and measures about 2 billion light-years across.
- Notable large superstructure in the observable universe, found near Huge-LQG.
- Discovered in 1991 by astronomers Roger Clowes and Luis Campusano.
Sloan Great Wall
- A cosmic structure that is a giant wall of galaxies, forming a galaxy filament.
South Pole Wall
- Massive structure that extends at least 1.37 billion light-years, dense in several areas.
- Discovered in July 2020 by an international team, led by Daniel Pomarède.
- Notable for its location; heavily veiled by galactic dust, making it previously unnoticed.
BOSS Great Wall
- Identified using the Baryon Oscillation Spectroscopic Survey (BOSS) in early 2016.
- Discovered by a collaborative research team from various institutions.
- One of the largest superstructures in the observable universe.
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Description
Explore the fascinating world of cosmic structures with this flashcard set. Learn about the Hercules-Corona Borealis Great Wall, the largest known structure in the universe, and other monumental formations. Enhance your understanding of astronomy and the vastness of space!
