Gravitational lensing by an ellipsoidal Navarro–Frenk–White dark-matter halo: An analytic solution and its properties
David Heyrovský,
Michal Karamazov
Abstract:The analysis of gravitational lensing by galaxies and galaxy clusters typically relies on ellipsoidal lens models to describe the deflection of light by the involved dark-matter halos. These models are most often based on the isothermal density profile---not an optimal description of the halo, but easy to use because it leads to an analytic deflection-angle formula. Dark-matter halos are better described by the Navarro--Frenk--White (hereafter NFW) density profile. We set out to study lensing by a general tria… Show more
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