Let $\{f_\lambda\}$ be a family of rational maps of a fixed degree, with a marked critical point $c(\lambda)$. Under a natural assumption, we first prove that the hypersurfaces of parameters for which $c(\lambda)$ is periodic converge as a sequence of positive closed $(1,1)$ currents to the bifurcation current attached to $c$ and defined by DeMarco. We then turn our attention to the parameter space of polynomials of a fixed degree $d$. By intersecting the $d-1$ currents attached to each critical point of a polynomial, Bassaneli and Berteloot obtained a positive measure $\mu_{\rm bif}$ of finite mass which is supported on the connectedness locus. They showed that its support is included in the closure of the set of parameters admitting $d-1$ neutral cycles. We show that the support of this measure is precisely the closure of the set of strictly critically finite polynomials (i.e., of Misiurewicz points).


Additional Information

Print ISSN
pp. 979-1032
Launched on MUSE
Open Access
Back To Top

This website uses cookies to ensure you get the best experience on our website. Without cookies your experience may not be seamless.