3 papers
astro-ph.CO2025
Discovery of SN 2025wny: a Strongly Gravitationally Lensed Superluminous Supernova at z = 2.01
Joel Johansson, Daniel A. Perley, Ariel Goobar +31
We present the discovery of SN 2025wny (ZTF25abnjznp/GOTO25gtq) and spectroscopic classification of this event as the first gravitationally lensed Type I superluminous supernovae (…
astro-ph.CO2025
Bimetric gravity improves the fit to DESI BAO and eases the Hubble tension
Marcus Högås, Edvard Mörtsell
We investigate whether the latest combination of DESI DR2 baryon acoustic oscillation (BAO) measurements, cosmic microwave background (CMB) data (Planck 2018 + ACT), and Type Ia su…
astro-ph.CO2025
Implications for dark energy of cosmic transparency in light of DESI data
S. Dhawan, E. Mörtsell
The distance duality relation (DDR) between luminosity and angular diameter distances holds if gravity is described by a metric theory and the universe is transparent. Recent cosmo…