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20 April 2024

» arxiv » 2012.06593

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Prospects for Measuring the Hubble Constant with Neutron-Star-Black-Hole Mergers
Stephen M. Feeney ; Hiranya V. Peiris ; Samaya M. Nissanke ; Daniel J. Mortlock ;
Date:	11 Dec 2020
Abstract:	Gravitational wave (GW) and electromagnetic (EM) observations of neutron-star-black-hole (NSBH) mergers can provide precise local measurements of the Hubble constant ($H_0$), ideal for resolving the current $H_0$ tension. We perform end-to-end analyses of realistic populations of simulated NSBHs, incorporating both GW and EM selection for the first time. We show that NSBHs could achieve unbiased 1.5-2.4% precision $H_0$ estimates by 2030. The achievable precision is strongly affected by the details of spin precession and tidal disruption, highlighting the need for improved modeling of NSBH mergers.
Source:	arXiv, 2012.06593
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