3 papers
astro-ph.GA2026
Examining extinction distributions for type Ia supernovae in simulated 3D galaxies
João Duarte, Santiago González-Gaitán, Ana M. Mourão +2
Dust extinction and reddening greatly contribute to type Ia supernovae (SNe Ia) observed color and magnitude variations. The models used to describe the extinction probability dens…
astro-ph.CO2025
On the impact of the supernova subsamples in reducing the Hubble tension
Gonçalo Martins, Santiago González-Gaitán, João Duarte +1
The persistent 4-6 difference between early- and late-time Hubble constant () measurements, known as the "Hubble tension", is a major problem in modern cosmology. We stud…
astro-ph.GA2025
from multi-waveband galaxy polarimetry in supernovae vicinity
João Rino-Silvestre, Santiago González-Gaitán, Ana Mourão +2
Peculiar dust extinction laws have been reported for some type Ia supernovae (SNe) with the parameter much lower than the average value for the Milky Way (MW) of 3.1. Using o…