EN
We consider a nonlinear parabolic system modelling chemotaxis
$u_t = ∇·(∇u - u∇v)$, $v_t = Δv + u$
in ℝ², t > 0. We first prove the existence of time-global solutions, including self-similar solutions, for small initial data, and then show the asymptotically self-similar behavior for a class of general solutions.