All articles tagged with #universe structure
Astronomers have discovered one of the largest rotating structures in the universe, a cosmic filament about 140 million light years away, composed of a thin chain of hydrogen-rich galaxies that appear to rotate collectively, providing new insights into galaxy formation and the dynamics of the cosmic web.
The FLAMINGO simulation models the universe's evolution and reveals a persistent discrepancy where observed matter is smoother than predicted by standard cosmological models, especially in current universe maps, suggesting potential new physics or modifications to existing theories.
Researchers using the James Webb Space Telescope discovered a pattern in ancient galaxy rotations that challenges current theories, proposing that the universe might be trapped inside a massive black hole, though alternative explanations like observational bias are also considered. These findings could significantly alter our understanding of cosmic origins and structure.
A study using NASA's James Webb Telescope analyzing 263 ancient galaxies suggests the universe may have a preferred direction of rotation and raises the bold hypothesis that we could be living inside a black hole, challenging traditional Big Bang theories, though further research is needed to confirm these findings.
New theoretical research suggests that the universe's large-scale structure may be influenced by microscopic vortexes in ultralight dark matter, which behave like a superfluid and could connect galaxies through cosmic filaments, potentially impacting our understanding of galaxy formation and distribution.
Researchers have developed a new method to measure the mass of cosmic filaments, which connect galaxy clusters and form the cosmic web, potentially unlocking secrets about dark matter and dark energy. By analyzing the redshift dispersion of galaxies within these filaments, scientists can estimate the hidden dark matter mass. This method, tested in cosmological simulations, could provide insights into the universe's structure and evolution when applied to real galaxy surveys.
Astronomers have released the Siena Galaxy Atlas (SGA), a comprehensive galactic map that includes data from three wide-ranging surveys completed between 2014 and 2017. The SGA contains the distance, location, and chemical profile of 380,000 galaxies across half of the night sky, providing a comprehensive picture of the cosmos and supporting further research on galaxy formation and the structure of the Universe. The SGA is freely available to the public and offers precise data on the locations, shapes, and sizes of nearby large galaxies, as well as being the first comprehensive survey to provide data on the galaxies' light profiles.
Researchers have used simulations to study the structure of the universe by treating the distribution of galaxies as a collection of points, enabling the application of mathematics developed for materials science to quantify the relative disorder of the universe. The distribution of galaxies in the universe is quite different from the physical properties of conventional materials, having its own unique signature. The universe approaches hyperuniformity on the largest scales, while on smaller scales it becomes almost antihyperuniform and strongly inhomogeneous. This interdisciplinary work has future implications for both cosmology and condensed matter physics.