It is named as Quipu.
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This image shows five newly discovered superstructures.
Quipu (red) is the largest structure ever found in the universe. The others are
Shapley (blue), Serpens-Corona Borealis (green), Hercules (purple) and
Sculptor-Pegasus (beige). Credit: arXiv (2025). DOI: 10.48550/arxiv.2501.19236 |
To accurately determine cosmological parameters, we need to
understand how the Universe’s large-scale structure affects measurements. These
effects include changes to the cosmic microwave background, distortions of sky
images caused by large-scale gravitational lensing, and the impact of
large-scale streaming motions on measurements of the Hubble constant. These
streaming motions originate from mass concentrations far away.
Astronomers discovered the largest structure in the
Universe, called Quipu, containing an astonishing 200 quadrillion solar masses.
Among the five most prominent superstructures, the largest is longer than 400
megaparsecs and has an estimated mass of about (2 \times 10^{17}) solar masses.
This entity, Quipu, is the largest cosmic structure discovered to date.
Studying Quipu and Other Superstructures:
- Galaxies Evolution: Quipu and similar superstructures help us understand how galaxies change over time.
- Improving Models: They enhance our cosmological models and the accuracy of measurements.
Quipu – The Largest Structure:
- Largest Discovery: Quipu is the biggest structure found in the Universe.
- Content: Along with four other superstructures, it holds 45% of galaxy clusters, 30% of galaxies, 25% of matter, and occupies 13% of volume.
- Discovery Range: They were found within a distance of 130 to 250 megaparsecs (Mpc).
Astronomers used X-ray galaxy clusters from the Cosmic Large-Scale Structure in X-rays (CLASSIX) Cluster Survey. These clusters contain thousands of galaxies and emit X-rays due to hot intracluster gas.
Quipu are recording devices made of knotted cords. The knots
contain information based on color, order, and number. The superstructure of
Quipu looks like a long filament with small side filaments, which is why it was
named Quipu.
Superstructures like Quipu leave an imprint on the Cosmic
Microwave Background (CMB), the relic radiation from the Big Bang, with key
evidence supporting it. The CMB’s properties match our theoretical predictions
very accurately.
As the CMB passes through these superstructures, their
gravity alters it, causing fluctuations known as the Integrated Sachs-Wolfe
(ISW) effect. These fluctuations are difficult to filter out and interfere with
our understanding of the CMB and the Big Bang.
The superstructures can impact measurements of the Hubble constant, which describes how fast the Universe is expanding. Simulations of the Lambda Cold Dark Matter (CDM) model produce superstructures like Quipu and the four others. These simulations show that superstructures should modify the cosmic microwave background through the Integrated Sachs-Wolfe (ISW) effect.
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