It is sometimes referred to as the Great Attractor Wall or Norma Wall.
A wall was proposed to be the physical embodiment of the Great Attractor, with the Norma Cluster as part of it.A "Centaurus Great Wall" (or "Fornax Great Wall" or "Virgo Great Wall") has been proposed, which would include the Fornax Wall as a portion of it (visually created by the Zone of Avoidance) along with the Centaurus Supercluster and the Virgo Supercluster also known as our Local Supercluster within which the Milky Way galaxy is located (implying this to be the Local Great Wall).Galaxy filaments, walls and voids form web-like structures. This is also the first time since 1991 that a galaxy filament/great wall held the record as the largest known structure in the universe. The largest known structure in the universe. The wall is "parallel" to the Sculptor Wall and "perpendicular" to the Grus Wall. The Grus Wall is "perpendicular" to the Fornax and Sculptor Walls. The Sculptor Wall is "parallel" to the Fornax Wall and "perpendicular" to the Grus Wall. Sculptor Wall (Southern Great Wall, Great Southern Wall, Southern Wall) This was the largest known galaxy filament to be discovered, until it was eclipsed by the Hercules–Corona Borealis Great Wall found ten years later. The CfA Homunculus lies at the heart of the Great Wall, and the Coma Supercluster forms most of the homunculus structure. This was the first super-large large-scale structure or pseudo-structure in the universe to be discovered. The galaxy wall subtype of filaments have a significantly greater major axis than minor axis in cross-section, along the lengthwise axis.ĬfA2 Great Wall (Coma Wall, Great Wall, Northern Great Wall, Great Northern Wall, CfA Great Wall) (2014) based on distance measurements using the TRGB method. The proposal of this filament, and of a similar but shorter filament, were the result of a study by McQuinn et al. A short filament was proposed by Adi Zitrin and Noah Brosch-detected by identifying an alignment of star-forming galaxies-in the neighborhood of the Milky Way and the Local Group.As of 2008, it was still the largest structure beyond redshift 2. Z=2.38 filament around protocluster ClG J2143-4423Ī filament the length of the Great Wall was discovered in 2004. įrom 2000 km/s to 8000 km/s in redshift spaceĬonnected to and separate from the Lynx–Ursa Major Supercluster. Ĭonnected to the CfA Homunculus, a portion of the filament forms a portion of the "leg" of the Homunculus. Ĭonnected to the Pisces–Cetus Supercluster, with the Perseus–Pisces Supercluster being a member of the filament. The Coma Supercluster lies within the Coma Filament. The filament subtype of filaments have roughly similar major and minor axes in cross-section, along the lengthwise axis.
In November 2013, using gamma-ray bursts as reference points, astronomers discovered the Hercules–Corona Borealis Great Wall, an extremely huge filament measuring more than 10 billion light-years across. On January 11, 2013, researchers led by Roger Clowes of the University of Central Lancashire announced the discovery of a large quasar group, the Huge-LQG, which dwarfs previously discovered galaxy filaments in size. In 1989, the CfA2 Great Wall was discovered, followed by the Sloan Great Wall in 2003.
Brent Tully of the University of Hawaii's Institute of Astronomy identified what he called the Pisces–Cetus Supercluster Complex. Dark matter gravitationally attracts baryonic matter, and it is this "normal" matter that astronomers see forming long, thin walls of super-galactic clusters.ĭiscovery of structures larger than superclusters began in the late-1980s. It is thought that this dark matter dictates the structure of the Universe on the grandest of scales. In the standard model of the evolution of the universe, galactic filaments form along and follow web-like strings of dark matter-also referred to as the galactic web or cosmic web. These massive, thread-like formations can reach 80 megaparsecs h −1 (or of the order of 160 to 260 million light-years ) and form the boundaries between large voids. In cosmology, galaxy filaments (subtypes: supercluster complexes, galaxy walls, and galaxy sheets) are the largest known structures in the universe, consisting of walls of gravitationally bound galaxy superclusters.
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