A new candidate quasar strongly lensed by the galaxy cluster WHJ0400-27 with an 18″ image separation

[Context] Time-delay cosmography (TDC) using quasi-stellar objects (QSOs) multiply lensed by galaxies has recently emerged as an independent and competitive tool for measuring the value of the Hubble constant. Lens galaxy clusters hosting multiply imaged QSOs, when coupled with an accurate and preci...

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Detalles Bibliográficos
Autores: Bazzanini, Lorenzo, Angora, Giuseppe, Scialpi, Martina, Di Rosa, Giorgia, Bergamini, Pietro, Rosati, Piero, Lombardi, Marco, Abriola, Davide, Acebron, Ana, D'Addona, Maurizio, Granata, Giovanni, Grillo, Claudio, Mannucci, Filippo, Maturi, Matteo, Meneghetti, Massimo, Mercurio, Amata, Radovich, Mario
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/398632
Acceso en línea:http://hdl.handle.net/10261/398632
Access Level:acceso abierto
Palabra clave:Gravitational lensing: strong
Galaxies: clusters: general
Quasars: general
Cosmology: observations
Descripción
Sumario:[Context] Time-delay cosmography (TDC) using quasi-stellar objects (QSOs) multiply lensed by galaxies has recently emerged as an independent and competitive tool for measuring the value of the Hubble constant. Lens galaxy clusters hosting multiply imaged QSOs, when coupled with an accurate and precise knowledge of their total mass distribution, are equally powerful cosmological probes. However, fewer than ten such systems have been identified to date.

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