Search Results for author: Andrew R. Williamson

Found 3 papers, 2 papers with code

Lightning-Fast Gravitational Wave Parameter Inference through Neural Amortization

no code implementations24 Oct 2020 Arnaud Delaunoy, Antoine Wehenkel, Tanja Hinderer, Samaya Nissanke, Christoph Weniger, Andrew R. Williamson, Gilles Louppe

Gravitational waves from compact binaries measured by the LIGO and Virgo detectors are routinely analyzed using Markov Chain Monte Carlo sampling algorithms.

Unbiased Hubble constant estimation from binary neutron star mergers

1 code implementation28 Nov 2018 Daniel J. Mortlock, Stephen M. Feeney, Hiranya V. Peiris, Andrew R. Williamson, Samaya M. Nissanke

Gravitational wave (GW) observations of binary neutron star (BNS) mergers can be used to measure luminosity distances and hence, when coupled with estimates for the mergers' host redshifts, infer the Hubble constant, $H_0$.

Cosmology and Nongalactic Astrophysics

Prospects for resolving the Hubble constant tension with standard sirens

1 code implementation9 Feb 2018 Stephen M. Feeney, Hiranya V. Peiris, Andrew R. Williamson, Samaya M. Nissanke, Daniel J. Mortlock, Justin Alsing, Dan Scolnic

The Hubble constant ($H_0$) estimated from the local Cepheid-supernova (SN) distance ladder is in 3-$\sigma$ tension with the value extrapolated from cosmic microwave background (CMB) data assuming the standard cosmological model.

Cosmology and Nongalactic Astrophysics

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