Scanning the Universe for Large-Scale Structures using Gamma-Ray Bursts

Abstract

In the past few decades, large universal structures have been found that challenge the homogeneity and isotropy expected in standard cosmological models. The largest of these, identified as the Hercules-Corona Borealis Great Wall, was found in 2014 in the northern galactic hemisphere in the redshift range of 1.6 < z < 2.1. Subsequent studies used an increasing gamma-ray burst database to show that the cluster was unlikely to have been caused by statistical sampling uncertainties. This study re-examines burst clustering in the northern galactic hemisphere using a recently developed methodology. Evidence is provided that the Hercules-Corona Borealis Great Wall cluster is larger than previously thought, with members potentially spanning the redshift range of 0.33 < z < 2.43. The extension of this cluster's size does not appear to have been due to statistical variations or sampling biases.

submitted

References in corpus (16)

• The Supernova -- Gamma-Ray Burst Connection
• A galaxy at a redshift z = 6.96
• Interacting galaxies on FIRE-2: The connection between enhanced star formation and interstellar gas content
• Spectral analysis of Fermi-LAT gamma-ray bursts with known redshift and their potential use as cosmological standard candles
• Gamma-Ray Bursts, Quasars, Baryonic Acoustic Oscillations, and Supernovae Ia: new statistical insights and cosmological constraints
• Testing the Randomness in the Sky-Distribution of Gamma-Ray Bursts
• Testing Isotropic Universe Using the Gamma-Ray Burst Data of Fermi / GBM
• The clustering of gamma-ray bursts in the Hercules-Corona Borealis Great Wall: the largest structure in the Universe?
• Revisiting the luminosity and redshift distributions of long gamma-ray bursts
• Some statistical remarks on the Giant GRB Ring
• Cosmicflows-3: The South Pole Wall
• The cosmological star formation history from the Local Cosmological Volume of galaxies and constraints on the matter homogeneity
• Does the GRB Duration Depend on Redshift?
• Graph-based clustering of gamma-ray bursts
• Local alignments of parsec-scale AGN radiojets
• King Ghidorah Supercluster: Mapping the light and dark matter in a new supercluster at z=0.55 using the Subaru Hyper Suprime-Cam