2 papers
astro-ph.CO2026
The age of the Universe from a large sample of the oldest Galactic stars
Indranil Banik, Thenujaya Kudakolawa Kaluarachchige, Stephen Cookson +1
We estimate the age of the Universe using the Xiang & Rix sample of 247,103 Milky Way stars with high-resolution spectroscopy from LAMOST DR7 and eDR3 parallaxes. Stellar ag…
astro-ph.GA2026
A Quality Framework for Testing Gravity with Wide Binaries: No Evidence for MOND
Stephen A. Cookson, Indranil Banik, Kareem El-Badry +4
Wide binaries (WBs) offer a unique opportunity to test gravity in the low-acceleration regime, where modifications such as Milgromian dynamics (MOND) predict measurable deviations…