3 papers
astro-ph.CO2026
Still Accelerating: Type Ia supernova cosmology is robust to host galaxy age evolution
Phil Wiseman, Brodie Popovic, Mark Sullivan +14
Type Ia supernovae are a cornerstone of modern cosmology, providing first evidence for cosmic acceleration and new tests of dark energy. Son et al. 2025 (S25) claim a strong redshi…
astro-ph.CO2025
Dark sirens and the impact of redshift precision
Madeline L. Cross-Parkin, Cullan Howlett, Tamara M. Davis +1
With the growing number of gravitational wave detections, achieving a competitive measurement of with dark sirens is becoming increasingly feasible. The expansion of the Ligo…
astro-ph.CO2025
Improving the Determination of Supernova Cosmological Redshifts by Using Galaxy Groups
Erik R. Peterson, Bastien Carreres, Anthony Carr +9
At the low-redshift end () of the Hubble diagram with Type Ia Supernovae (SNe Ia), the contribution to Hubble residual scatter from peculiar velocities is of similar size t…