Article Dans Une Revue Classical and Quantum Gravity Année : 2021

Gravitational lenses in arbitrary space-times

Pierre Fleury
  • Fonction : Auteur
Julien Larena

Résumé

The precision reached by current and forthcoming strong-lensing observations requires to accurately model various perturbations to the main deflector. Hitherto, theoretical models have been developed to account for either cosmological line-of-sight perturbations, or isolated secondary lenses via the multi-plane lensing framework. This article proposes a general formalism to describe multiple lenses within an arbitrary space-time background. The lens equation, and the expressions of the amplification and time delays, are rigorously derived in that framework. Our results may be applied to a wide range of set-ups, from strong lensing in anisotropic cosmologies, to line-of-sight perturbations beyond the tidal regime.

Dates et versions

hal-03034781 , version 1 (01-12-2020)

Identifiants

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Pierre Fleury, Julien Larena, Jean-Philippe Uzan. Gravitational lenses in arbitrary space-times. Classical and Quantum Gravity, 2021, 38 (8), pp.085002. ⟨10.1088/1361-6382/abea2d⟩. ⟨hal-03034781⟩
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