Modelling the line-of-sight contribution in substructure lensing

• Published in: Monthly notices of the Royal Astronomical Society Vol. 475; no. 4; pp. 5424 - 5442
• Main Authors: Despali, Giulia, Vegetti, Simona, White, Simon D M, Giocoli, Carlo, van den Bosch, Frank C
• Format: Journal Article
• Language: English
• Published: London Oxford University Press 21.04.2018
• Subjects: Angular resolution; Cold dark matter; Confidence intervals; Dark matter; Galaxies; Gravitation; Gravitational lenses; Line of sight; Object recognition; Red shift; Statistical analysis; Substructures; galaxies: general; dark matter; gravitational lensing: strong; large-scale structure of Universe; galaxies: haloes; cosmology: theory

Abstract We investigate how Einstein rings and magnified arcs are affected by small-mass dark-matter haloes placed along the line of sight to gravitational lens systems. By comparing the gravitational signature of line-of-sight haloes with that of substructures within the lensing galaxy, we derive a...