H0LiCOW VIII. A weak-lensing measurement of the external convergence in the field of the lensed quasar HE 0435−1223. Issue 4 (26th April 2018)

• Record Type: Journal Article
• Authors: Tihhonova, O; Courbin, F; Harvey, D; Hilbert, S; Rusu, C E; Fassnacht, C D; Bonvin, V; Marshall, P J; Meylan, G; Sluse, D; Suyu, S H; Treu, T; Wong, K C
• Is Part Of: Monthly notices of the Royal Astronomical Society. Volume 477:Issue 4(2018)
• Page Start: 5657
• Page End: 5669
• Publication Date: 2018-04-26
• Subjects: gravitational lensing: weak -- quasars: individual: HE 0435−1223 -- cosmological parameters -- distance scale; Astronomy -- Periodicals; Periodicals; 520.5
• DOI: 10.1093/mnras/sty1040
• Languages: English
• ISSNs: 0035-8711

Abstract

Abstract: We present a weak gravitational lensing measurement of the external convergence along the line of sight to the quadruply lensed quasar HE 0435−1223. Using deep r -band images from Subaru Suprime Cam, we observe galaxies down to a 3σ limiting magnitude of ∼26 mag resulting in a source galaxy density of 14 galaxies per square arcminute after redshift-based cuts. Using an inpainting technique and multiscale entropy filtering algorithm, we find that the region in close proximity to the lens has an estimated external convergence of $\kappa =-0.012^{+0.020}_{-0.013}$ and is hence marginally underdense. We also rule out the presence of any halo with a mass greater than M vir = 1.6 × 10 14 h −1 M ⊙ (68 per cent confidence limit). Our results, consistent with previous studies of this lens, confirm that the intervening mass along the line of sight to HE 0435−1223 does not affect significantly the cosmological results inferred from the time-delay measurements of that specific object.