3 papers
astro-ph.CO2026
Constraints on Ultralight Scalar and Dark Photon Dark Matter from PPTA-DR3 and EPTA-DR2
Xiao-Song Hu, Siyuan Chen, Kuo Liu +18
The cold dark matter model successfully describes the Universe on large scales, yet faces challenges at sub-galactic scales. Ultralight dark matter (ULDM), with particle masses aro…
astro-ph.CO2025
Mitigating point-source contamination in CMB polarization: a Generalized Point Spread Function fitting approach
Yi-Ming Wang, Wen-Zheng Chen, Yang Liu +2
Observations of Cosmic Microwave Background (CMB) B-mode polarization provide a way to probe primordial gravitational waves and test inflationary predictions. Extragalactic point s…
astro-ph.CO2025
From South to North: Leveraging Ground-Based LATs for Full-Sky CMB Delensing and Constraints on
Wen-Zheng Chen, Yang Liu, Yi-Ming Wang +1
Delensing--the process of mitigating the lensing-induced B-mode contamination in cosmic microwave background (CMB) observations--will be a pivotal challenge for next-generation CMB…