3 papers
astro-ph.CO2026
Understanding the non-Gaussian nature of Galactic foreground emissions towards small scales
Fazlu Rahman, Pravabati Chingangbam, Kevin Huffenberger +4
We present a unified, multi-scale study of non-Gaussianity of Galactic foreground emissions using Minkowski Functionals and generalized skewness-kurtosis parameters, focusing on th…
astro-ph.CO2025
Constraints on Cosmic Birefringence from SPIDER, Planck, and ACT observations
Lu Yin, Shuhang Xiong, Joby Kochappan +2
The Early Dark Energy (EDE) model has been proposed as a candidate mechanism to generate cosmic birefringence through a Chern-Simons coupling between a dynamical scalar field and t…
astro-ph.CO2024
Observational evidence for Early Dark Energy as a unified explanation for Cosmic Birefringence and the Hubble tension
Joby Kochappan, Lu Yin, Bum-Hoon Lee +1
We test the =3 Ultralight Axion-like model of Early Dark Energy (EDE) with the observationsof the mode of the cosmic microwave background (CMB) radiation, and local expansi…