Masses of galaxy clusters from gravitational lensing

• Verfasst von: Hoekstra, Henk [VerfasserIn]
• Verfasst von: Bartelmann, Matthias [VerfasserIn]
• Titel: Masses of galaxy clusters from gravitational lensing
• Verf.angabe: Henk Hoekstra, Matthias Bartelmann, Haakon Dahle, Holger Israel, Marceau Limousin, Massimo Meneghetti
• Fussnoten: Gesehen am 21.09.2017
• Titel Quelle: Enthalten in: De.arxiv.org
• Jahr Quelle: 2013
• Band/Heft Quelle: (2013) Artikel-Nummer 1303.3274, 47 Seiten
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1563688069

Abstract

Despite consistent progress in numerical simulations, the observable properties of galaxy clusters are difficult to predict ab initio. It is therefore important to compare both theoretical and observational results to a direct measure of the cluster mass. This can be done by measuring the gravitational lensing effects caused by the bending of light by the cluster mass distribution. In this review we discuss how this phenomenon can be used to determine cluster masses and study the mass distribution itself. As sample sizes increase, the accuracy of the weak lensing mass estimates needs to improve accordingly. We discuss the main practical aspects of these measurements. We review a number of applications and highlight some recent results.