Parameter-free Hubble constant from the quadruply lensed quasar SDSS J1004+4112

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URI: https://hdl.handle.net/10902/32717
ISSN: 0004-6361
ISSN: 1432-0746
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Autoría
Diego Rodríguez, José MaríaAutoridad Unican; Goicoechea Santamaría, Luis JuliánAutoridad Unican; Martínez Arrizabalaga, Joseba
Fecha
2024-02
Derechos
Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. This article is published in open access under the Subscribe to Open model. Subscribe to A&A to support open access publication.
Publicado en
Astronomy and Astrophysics, 2024, 682, A187
Editorial
EDP Sciences
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Palabras clave
Gravitation
Gravitational lensing: strong
Methods: statistical
Galaxies: clusters: individual: SDSS J1004+4112
Cosmological parameters
Cosmology: theory
Resumen/Abstract
We present a free-form lens model for the multiply lensed quasar in the galaxy cluster SDSS J1004+4112. Our lens model draws minimal assumptions on the distribution of mass in the lens plane. We have paid particular attention to the model uncertainties on the predicted time delay originating from the particular configuration of model variables. Taking into account this uncertainty, we obtained a value of the Hubble constant of H₀ = 74+⁹−₁₃ km s−¹ Mpc−¹, which is consistent with recent independent estimates. The predicted time delay between the central image E and image C (the first to arrive) is ∆TE−C = 3200 ± 200 days for the estimated Hubble constant. Future measurements of ∆TE−C will allow for a tighter constraint to be imposed on H0 in this cluster-QSO system.
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Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. This article is published in open access under the Subscribe to Open model. Subscribe to A&A to support open access publication.Excepto si se señala otra cosa, la licencia del ítem se describe como Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. This article is published in open access under the Subscribe to Open model. Subscribe to A&A to support open access publication.