All posts tagged: cosmic structure

New Study Finds Hercules-Corona Borealis Great Wall Bigger and Nearer Than Thought

New Study Finds Hercules-Corona Borealis Great Wall Bigger and Nearer Than Thought

Published by Webster

Astronomers have revealed that the Hercules-Corona Borealis Great Wall, a massive network of galaxies, might be bigger than they realised. By mapping the cosmos with gamma-ray bursts (GRBs)—the brightest explosions in the universe—astronomers found that this structure is even bigger than previously estimated. Surprisingly, portions of it also lie significantly closer to Earth than previously believed, challenging fundamental assumptions about how the universe is structured and evolves.This cosmic structure was first observed in 2014 — a dense galaxy forming a filament of a supercluster. A new study now extends the researchers’ previous work, but with a wider GRB sample. Hakkila and Zsolt Bagoly, authors of the study, have refined the measurements. They detected a number of relatively nearby GRBs in their sample. The evidence also shows the Great Wall is larger and wider than previously predicted. Gamma-Ray Bursts Expose Structure Too Large for Current Models According to a Space.com report, the GRBs figure prominently in the early discovery and more recent growth of the Hercules–Corona Borealis Great Wall. These explosive outbursts — from either collapsing massive stars or colliding …

New Cosmic Surveys Reveal Unexpected Clues About Universe’s Evolution

New Cosmic Surveys Reveal Unexpected Clues About Universe’s Evolution

Published by Webster

New research examining data from two major cosmic surveys indicates that the universe may have evolved in a way that is more complex than previously thought. A team led by Joshua Kim and Mathew Madhavacheril at the University of Pennsylvania, in collaboration with researchers from Lawrence Berkeley National Laboratory, analysed data from the Atacama Cosmology Telescope (ACT) and the Dark Energy Spectroscopic Instrument (DESI). Their findings hint at a small discrepancy in the expected distribution of cosmic structures, particularly in the last four billion years. Cosmic Observations and Findings According to the study published in the Journal of Cosmology and Astroparticle Physics and on the preprint server arXiv, researchers combined ACT’s cosmic microwave background (CMB) lensing data with DESI’s luminous red galaxy (LRG) distribution. ACT’s observations provide insight into the early universe, measuring faint light from around 380,000 years after the Big Bang, while DESI maps the three-dimensional distribution of millions of galaxies to understand cosmic structure formation in more recent epochs. By overlaying these datasets, researchers created a comprehensive view of cosmic evolution. The …