A Mass Model for the Lensing Cluster SDSS J1004+4112: Constraints from the Third Time Delay

Bibcode
2022ApJ...937...35F
DOI
10.3847/1538-4357/ac8c40
Forés-Toribio, R.; Muñoz, J. A.; Kochanek, C. S.; Mediavilla, E.
Referencia bibliográfica

The Astrophysical Journal

Fecha de publicación:
9
2022
Revista
The Astrophysical Journal
Número de autores
4
Número de autores del IAC
1
Número de citas
10
Número de citas referidas
8
Descripción
We have built a new model for the lens system SDSS J1004+4112 including the recently measured time delay of the fourth quasar image. This time delay has a strong influence on the inner mass distribution of the lensing cluster (ρ ∝ r -α ) allowing us to determine $\alpha ={1.18}_{-0.03(-0.18)}^{+0.02(+0.11)}$ at the 68% (95%) confidence level in agreement with hydrodynamical simulations of massive galaxy clusters. We find an offset between the brightest cluster galaxy and the dark matter halo of ${3.8}_{-0.7(-1.3)}^{+0.6(+1.4)}$ kpc at 68% (95%) confidence which is compatible with other galaxy cluster measurements. As an observational challenge, the estimated time delay between the leading image C and the faint (I = 24.7) fifth image E is roughly 8 yr.
Proyectos relacionados
Imagen del Proyecto
Astrofísica Relativista y Teórica

El estudio de las lentes gravitatorias proporciona poderosas herramientas en Astrofísica y Cosmología. Las principales aplicaciones de las lentes gravitatorias en las que se centra este proyecto son las siguientes: (i) estudiar la presencia de subestructura de materia obscura en las galaxias lente a partir de las anomalías en la magnificación de

Evencio
Mediavilla Gradolph
En ejecución
Tipo
Con árbitro
Lente gravitacional
Efecto fuerte de lente gravitacional
Cúmulos de galaxias
Distribución de materia oscura
Cuásares
Cosmología y Astropartículas (CYA)

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