X-ray study of the double source plane gravitational lens system Eye of Horus observed with XMM-Newton
Chan, J H H
Jaelani, Anton T
Rusu, Cristian E
Wong, Kenneth C
AffiliationUniv Arizona, Steward Observ
Keywordsgravitational lensing: strong
galaxies: clusters: individual: HSC J142449-005322
galaxies: clusters: intracluster medium
MetadataShow full item record
PublisherOXFORD UNIV PRESS
CitationKeigo Tanaka, Ayumi Tsuji, Hiroki Akamatsu, J H H Chan, Jean Coupon, Eiichi Egami, Francois Finet, Ryuichi Fujimoto, Yuto Ichinohe, Anton T Jaelani, Chien-Hsiu Lee, Ikuyuki Mitsuishi, Anupreeta More, Surhud More, Masamune Oguri, Nobuhiro Okabe, Naomi Ota, Cristian E Rusu, Alessandro Sonnenfeld, Masayuki Tanaka, Shutaro Ueda, Kenneth C Wong, X-ray study of the double source plane gravitational lens system Eye of Horus observed with XMM–Newton, Monthly Notices of the Royal Astronomical Society, Volume 491, Issue 3, January 2020, Pages 3411–3418, https://doi.org/10.1093/mnras/stz3188
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AbstractA double source plane (DSP) system is a precious probe for the density profile of distant galaxies and cosmological parameters. However, these measurements could be affected by the surrounding environment of the lens galaxy. Thus, it is important to evaluate the cluster-scale mass for detailed mass modelling. We observed the Eye of Horus, a DSP system discovered by the Hyper Suprime-Cam Subaru Strategic Survey (HSC-SSP), with XMM-Newton. We detected two X-ray extended emissions, originating from two clusters, one centred at the Eye of Horus, and the other located similar to 100 arcsec north-east to the Eye of Horus. We determined the dynamical mass assuming hydrostatic equilibrium, and evaluated their contributions to the lens mass interior of the Einstein radius. The contribution of the former cluster is 1.1(-0.5)(+1.2) x 10(12) M-circle dot, which is 21-76 per cent of the total mass within the Einstein radius. The discrepancy is likely due to the complex gravitational structure along the line of sight. On the other hand, the contribution of the latter cluster is only similar to 2 per cent on the Eye of Horus. Therefore, the influence associated with this cluster can be ignored.
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