2025/04/06 by Istvan Horvath, I. Horváth, Z. Bagoly +12 · 2 voices · 4 citations
Mathematics · Physics and Astronomy · #Astronomy #Astronomy and Astrophysical Research #Astrophysics #Gamma-ray bursts and supernovae #Physics #Scale (ratio) #Statistical and numerical algorithms #Universe #astro-ph.CO #astro-ph.HE
paper · pdf · doi:10.3390/universe11040121
published in Universe 11(4), 121 (Multidisciplinary Digital Publishing Institute)
openalex publication_date 2025/04/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.