3 papers
astro-ph.CO2026
Breaking the Mass-sheet Degeneracy in Time-delay Cosmology with Lensed and Unlensed Type Ia Supernovae
Xiaolei Li, Kai Liao, Xuheng Ding
This study introduces an innovative framework aimed at overcoming the ongoing issue of mass-sheet degeneracy (MSD) in time-delay cosmography by incorporating observations of both g…
astro-ph.GA2025
HST Confirms Sub-5 kpc Dual Quasar Pairs at Cosmic Noon
Qian Wang, Xuheng Ding, John Silverman +12
During cosmic noon (), when both star formation and black hole growth peaked, galaxy mergers are predicted to trigger dual active galactic nuclei (AGN) that eventually co…
astro-ph.GA2025
Unveiling Extended Components of 'Little Red Dots' in Rest-Frame Optical
Yiyang Zhang, Xuheng Ding, Lilan Yang +26
Recent JWST observations have revealed a population of red, compact, high-redshift objects called 'Little Red Dots'(LRD), whose host components have remained largely unconstrained,…