On a variant of the Beckmann--Black problem

Given a field $k$ and a finite group $G$, the Beckmann–Black problem asks whether every Galois field extension $F\mathrm{/}k$ with group $G$ is the specialization at some $t_0\in k$ of some Galois field extension $E\mathrm{/}k(T)$ with group $G$ and $E\cap \bar{k}=k$. We show that the answer is positive for arbitrary $k$ and $G$, if one waives the requirement that $E\mathrm{/}k(T)$ is normal. In fact, our result holds if $\mathrm{G}\mathrm{a}\mathrm{l}(F\mathrm{/}k)$ is any given subgroup $H$ of $G$ and, in the special case $H=G$, we provide a similar conclusion even if $F\mathrm{/}k$ is not normal. We next derive that, given a division ring $H$ and an automorphism $\sigma$ of $H$ of finite order, all finite groups occur as automorphism groups over the skew field of fractions $H(T,\sigma )$ of the twisted polynomial ring $H[T,\sigma ]$.