A general-relativistic cosmographic expansion centered at arbitrary redshift is derived and tested on void and overdensity LTB models, showing that its coefficients lose strict local meaning near density gradients.
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Cosmography for a General Spacetime Centred at Arbitrary Redshift
A general-relativistic cosmographic expansion centered at arbitrary redshift is derived and tested on void and overdensity LTB models, showing that its coefficients lose strict local meaning near density gradients.