3 papers
astro-ph.CO2026
Testing cosmological isotropy with gravitational waves and gamma-ray bursts
Brian H. Y. Cheng, Donniel C. Cruz, Otto A. Hannuksela +18
The cosmological principle asserts that the Universe is homogeneous and isotropic on large enough scales. However, alternative cosmological models can bring about anisotropies thro…
astro-ph.CO2025
Bianchi Type I Model Cannot Explain the Observed CMB Angular Acoustic Scale Directional Variation
Boris Hoi-Lun Ng, Ming-Chung Chu
Anisotropic cosmological models have been gaining attention due to various observational hints of large-scale anisotropies. One of the most surprising evidences for the latter is t…
astro-ph.CO2025
Constraining Axially Symmetric Bianchi Type I Model with Self-Consistent Recombination History and Observables
Boris Hoi-Lun Ng, Ming-Chung Chu
Recent cosmological measurements suggest the possibility of an anisotropic universe. As a result, the Bianchi Type I model, being the simplest anisotropic extension to the standard…