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Model-independent determination of H0 and ΩK0 from strong lensing and type Ia supernovae

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Model-independent determination of H0 and ΩK0 from strong lensing and type Ia supernovae. / Collett, Thomas; Montanari, Francesco; Rasanen, Syksy.

In: Physical Review Letters, 31.10.2019.

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Collett, T., Montanari, F., & Rasanen, S. (Accepted/In press). Model-independent determination of H0 and ΩK0 from strong lensing and type Ia supernovae. Physical Review Letters.

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Collett, Thomas ; Montanari, Francesco ; Rasanen, Syksy. / Model-independent determination of H0 and ΩK0 from strong lensing and type Ia supernovae. In: Physical Review Letters. 2019.

Bibtex

@article{1dca577dd5ad4eddba37a2fd49dfcbd4,
title = "Model-independent determination of H0 and ΩK0 from strong lensing and type Ia supernovae",
abstract = "We present the first determination of the Hubble constant H0 from strong lensing time delay data and type Ia supernova luminosity distances that is independent of the cosmological model. We also determine the spatial curvature model-independently. We assume that light propagation over long distances is described by the FLRW metric and geometrical optics holds, but make no assumption about the contents of the Universe or the theory of gravity on cosmological scales. We find H0 = 75.7+4.5−4.4 km/s/Mpc and ΩK0 = 0.12+0.27−0.25. This is a 6{\%} determination of H0. A weak prior from the cosmic microwave background on the distance to the last scattering surface improves this to H0 = 76.8+4.2−3.8 km/s/Mpc and ΩK0 = 0.18+0.25−0.18. Assuming zero spatial curvature, we get H0 = 74.2+3.0−2.9 km/s/Mpc, a precision of 4{\%}. The measurements also provide a consistency test of the FLRW metric: we find no evidence against it.",
keywords = "astro-ph.CO, gr-qc",
author = "Thomas Collett and Francesco Montanari and Syksy Rasanen",
note = "7 pages, 1 figure",
year = "2019",
month = "10",
day = "31",
language = "English",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",

}

RIS

TY - JOUR

T1 - Model-independent determination of H0 and ΩK0 from strong lensing and type Ia supernovae

AU - Collett, Thomas

AU - Montanari, Francesco

AU - Rasanen, Syksy

N1 - 7 pages, 1 figure

PY - 2019/10/31

Y1 - 2019/10/31

N2 - We present the first determination of the Hubble constant H0 from strong lensing time delay data and type Ia supernova luminosity distances that is independent of the cosmological model. We also determine the spatial curvature model-independently. We assume that light propagation over long distances is described by the FLRW metric and geometrical optics holds, but make no assumption about the contents of the Universe or the theory of gravity on cosmological scales. We find H0 = 75.7+4.5−4.4 km/s/Mpc and ΩK0 = 0.12+0.27−0.25. This is a 6% determination of H0. A weak prior from the cosmic microwave background on the distance to the last scattering surface improves this to H0 = 76.8+4.2−3.8 km/s/Mpc and ΩK0 = 0.18+0.25−0.18. Assuming zero spatial curvature, we get H0 = 74.2+3.0−2.9 km/s/Mpc, a precision of 4%. The measurements also provide a consistency test of the FLRW metric: we find no evidence against it.

AB - We present the first determination of the Hubble constant H0 from strong lensing time delay data and type Ia supernova luminosity distances that is independent of the cosmological model. We also determine the spatial curvature model-independently. We assume that light propagation over long distances is described by the FLRW metric and geometrical optics holds, but make no assumption about the contents of the Universe or the theory of gravity on cosmological scales. We find H0 = 75.7+4.5−4.4 km/s/Mpc and ΩK0 = 0.12+0.27−0.25. This is a 6% determination of H0. A weak prior from the cosmic microwave background on the distance to the last scattering surface improves this to H0 = 76.8+4.2−3.8 km/s/Mpc and ΩK0 = 0.18+0.25−0.18. Assuming zero spatial curvature, we get H0 = 74.2+3.0−2.9 km/s/Mpc, a precision of 4%. The measurements also provide a consistency test of the FLRW metric: we find no evidence against it.

KW - astro-ph.CO

KW - gr-qc

M3 - Article

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

ER -

ID: 16121094