Seria: Seminarium Astrofizyczne

Prelegent i afiliacja: Prof. Martin Hendry (University of Glasgow, Glasgow, UK)

Data: wtorek 14 stycznia godz. 12:30

Miejsce: ul. Pasteura 7, sala 404 / https://meet.goto.com/NCBJmeetings/seminarium-astrofizyczne

Streszczenie: For several decades it has been recognised that the mergers of compact binary coalescence events can serve as standard sirens – the gravitational wave (GW) analog of standard candles – and recently analysis of the first GW catalogues compiled by the LIGO, Virgo and KAGRA collaborations has begun to turn standard sirens into a practical cosmological probe with the potential to bring important new insights to the Hubble tension.  Looking beyond the current generation of ground-based GW detectors, in the 2030s ground- and space-based facilities such as LISA and the Einstein Telescope offer the prospect to take standard sirens to a new level, probing cosmological parameters beyond the Hubble constant and perhaps exploring and constraining more exotic models beyond Concordance cosmology.  However, GW cosmology with next generation detectors will also bring some additional challenges, due to the influence of potential systematics arising from the sheer number and redshift distribution of sources that will be accessible.  In this talk I review the short history of GW cosmology with standard sirens to date, discuss some of the opportunities and challenges that lie ahead with the next generation of GW detectors, and consider how these challenges might be overcome.