3 papers
astro-ph.CO2026
Improved constraint on the Hubble constant from dark sirens with LIGO/Virgo/KAGRA O4a
V. Alfradique, C. R. Bom, G. Teixeira +1
A new measurement of the Hubble constant is presented using the statistical dark siren method applied to a sample of seven well-localized gravitational-wave (GW) events from…
astro-ph.CO2025
Systematic bias in dark siren statistical methods and its impact on Hubble constant measurement
V. Alfradique, C. R. Bom, T. Castro
The advent of multimessenger cosmology, marked by the detection of GW170817, demonstrated that standard sirens are a valuable cosmological probe. In the absence of an electromagnet…
astro-ph.CO2024
A deconstruction of methods to derive one-point lensing statistics
Viviane Alfradique, Tiago Castro, Valerio Marra +3
Gravitational lensing is a crucial tool for exploring cosmic phenomena, providing insights into galaxy clustering, dark matter, and dark energy. Given the substantial computational…