Abstract
In this work, I present a generalized linear Hubble lawfor a barotropic spherically symmetric inhomogeneous spacetime, which is in principle compatible with the acceleration of the cosmic expansion obtained as a result of high redshift supernovae data.The new Hubble function, defined by this law, has two additionalterms besides an expansion term, similar to the usual volume expansion term of the FLRW models, but now due to anangular expansion. The first additional term is dipolar and is a consequence of the existence of a kinematic acceleration of the observer, generated by a negative gradient of pressure or of mass-energy density. The second one is quadrupolar and due to the shear. Both additional terms are anisotropic for off-centre observers, because of their dependence on a telescopic angle of observation. This generalized linear Hubble law could explain, in a cosmological setting, the observedlarge scale flow of matter, without having recourse to peculiarvelocity-type Newtonian models. It is pointed out also that thematter dipole direction should coincide with the CBR dipole one.
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