Myself and Prof. Antonella Palmese recently drafted a 2025 review of gravitational wave cosmology.

It is a gentle introduction and review to standard sirens cosmology is a contribution to the Encyclopedia of Astrophysics (edited by Springer). The review covers in details methods for gravitational-wave cosmology with the mass spectrum, galaxy catalogs and electromagnetic counterparts.

Please, feel free to read our paper and reach out to us for any question or suggestion.

Figure: Depiction of the source mass method to infer the Hubble constant.

Leonardo Iampieri presented a new paper where we develop a novel strategy to study cosmic expansion with Gravitational Wave (GW) sources without an identified host galaxy but with an associated electromagnetic (EM) counterpart. We show that the relative time delay between the GW luminosity peak and the arrival of the EM counterpart can be used to measure the cosmic expansion and also fit the distribution of gamma-ray bursts prompt time delays.

Please, feel free to read our paper and reach out to us for any question or suggestion.

Figure: Posterior on the Hubble constant and mean and standard deviation of the GW-GRB prompt time delay distribution with 100 binary neutron star events.