Redshift drift cosmography for model-independent cosmological inference
  We develop a cosmographic framework for analysing redshift drift signals of
nearby sources model-independently, i.e., without making assumptions about the
metric description of the Universe. We show that the
Friedmann-Lema\^{\i}tre-Robertson-Walker (FLRW) prediction is altered
nontrivially by regional anisotropies and inhomogeneities. In particular, we
find that the position drift of the sources is nontrivially linked to the
redshift drift signal. The redshift drift signal for nearby sources might be
formulated in terms of an effective deceleration parameter, which reduces to
the FLRW deceleration parameter in the homogeneous and isotropic limit. The
presented cosmographic framework can be used for model-independent data
analysis, exploiting the fact that the exact anisotropic redshift drift signal
at lowest order in redshift is given by a finite set of physically
interpretable coefficients. We discuss physical limits of interest as well as
challenges related to the framework.
