Search Results for author: Stephen M. Feeney

Found 4 papers, 4 papers with code

SSSpaNG! Stellar Spectra as Sparse, data-driven, Non-Gaussian processes

1 code implementation19 Dec 2019 Stephen M. Feeney, Benjamin D. Wandelt, Melissa K. Ness

With this in mind, we introduce SSSpaNG: a data-driven Gaussian Process model of stellar spectra.

Solar and Stellar Astrophysics Astrophysics of Galaxies Instrumentation and Methods for Astrophysics

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

Clarifying the Hubble constant tension with a Bayesian hierarchical model of the local distance ladder

1 code implementation30 Jun 2017 Stephen M. Feeney, Daniel J. Mortlock, Niccolò Dalmasso

Estimates of the Hubble constant, $H_0$, from the distance ladder and the cosmic microwave background (CMB) differ at the $\sim$3-$\sigma$ level, indicating a potential issue with the standard $\Lambda$CDM cosmology.

Cosmology and Nongalactic Astrophysics

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