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astro-ph.CO2025
Inference of -mode polarization in the presence of non-Gaussian foregrounds
Sen Li, Chang Feng, Filipe B. Abdalla
The inflationary -mode signals encode invaluable information about the origin of our Universe and searching for potential signatures of primordial gravitational waves (PGWs) is…
astro-ph.CO2025
Improved constraints on ultralight axions using latest observations of the early and late Universe
Qianshuo Liu, Chang Feng, Filipe B. Abdalla
Ultralight axions (ULAs) are hypothetical particles which can behave like dark matter (DM) or dark energy (DE) depending on masses generated at the symmetry-breaking scale. It rema…
astro-ph.CO2025
Investigating cross-correlations between cosmic microwave background lensing and 21 cm intensity mapping
Alessandro Marins, Chang Feng, Filipe B. Abdalla
The neutral hydrogen (HI) signal is a crucial probe for astrophysics and cosmology, but it is quite challenging to measure from raw data because of bright foreground contaminants a…