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Here we study some general properties of spherical shear-free collapse. Itsgeneral solution when imposing conformal flatness is reobtained [1,2] andmatched to the outgoing Vaidya spacetime. We propose a simple model satisfyingthese conditions and study its physical consequences. Special attentiondeserve, the role played by relaxational processes and the conspicuous linkbetweeen dissipation and density inhomogeneity.Comment: 13 pages Latex. Some misprints in eqs.(17), (30) and (35) have been  correcte

SHEAR-FREE RADIATING COLLAPSE AND CONFORMAL FLATNESS