Redshift drift in a universe with structure: Lemaître-Tolman-Bondi structures with arbitrary angle of entry of light

We consider the redshift drift and position associated with astrophysical sources in a formalism that is suitable for describing emitters observers of light an arbitrary spacetime geometry, while identifying given null-geodesic bundle arrives at observer worldline. then restrict situation to special case Lemaitre-Tolman-Bondi (LTB) geometrical structure, solve rays propagating through structure impact parameters, i.e., angles entry into LTB structure. The signal emitted by comoving viewed turns out be dominated Ricci curvature electric Weyl contributions as integrated along connecting ray. This property simplifies computations tremendously, we expect extends more complicated models including Swiss-cheese models. When considering several null random mean well approximated single focusing term. suggests measurement cosmological can used direct probe strong energy condition realistic universe where photons pass many successive structures.