3 papers
astro-ph.CO2025
The lens mass in the Einstein ring JWST-ER1
Fulvio Melia
JWST has made several surprising discoveries, underscored by the `too early' appearance of well-formed galaxies and supermassive black holes. It recently also uncovered a compact g…
astro-ph.CO2024
A Comparative Test of the LCDM and R_h=ct Cosmologies Based on Upcoming Redshift Drift Measurements
Fulvio Melia
A measurement of the redshift drift constitutes a model-independent probe of fundamental cosmology. Several approaches are being considered to make the necessary observations, usin…
astro-ph.CO2024
Age of massive galaxies at redshift 8
M. Lopez-Corredoira, F. Melia, J. -J. Wei +1
Recent James Webb Space Telescope (JWST) data analyses have shown that massive red galaxies existed at redshifts , a discovery that is difficult to understand in the context o…