3 papers
astro-ph.CO2026
Cosmological Impact of Redshift-Dependent Type Ia Supernovae Calibration
Seyed Hamidreza Mirpoorian, Meng-Xiang Lin, Levon Pogosian
Type Ia supernovae (SNIa) play a central role in constraining the late-time expansion history of the Universe and are directly implicated in current cosmological tensions. Motivate…
astro-ph.CO2025
First astrometric constraints on parity-violation in the gravitational wave background
Santiago Jaraba, Sachiko Kuroyanagi, Qiuyue Liang +2
Astrometry, the precise measurement of stellar positions and velocities, offers a promising approach to probing the low-frequency stochastic gravitational wave background (SGWB). N…
astro-ph.CO2025
Apparent and a Lower from Dark Axion and Dark Baryons Interactions
Justin Khoury, Meng-Xiang Lin, Mark Trodden
We show that a simple coupling between dark energy and dark matter can simultaneously address two distinct hints at new physics coming from cosmological observations. The first is…