2 papers
astro-ph.CO2026
A Giant Ring on the sky
Alexia M. Lopez, Roger G. Clowes
We present the discovery of `A Giant Ring on the Sky' (GR); a ring-like, ultra-large-scale structure at z~0.8, located in the same field that contains the previously-documented Gia…
astro-ph.CO2025
Gigaparsec structures are nowhere to be seen in CDM: an enhanced analysis of LSS in FLAMINGO-10K simulations
A. M Lopez, R. G. Clowes
Recently, Sawala et al. 2025 claimed to refute the cosmological significance of the Giant Arc based on their analysis of the FLAMINGO-10K simulation data. In our paper here, we hig…