Local well-posedness of the Benjamin-Ono equation for a class of bounded initial data

We prove local well-posedness of the Benjamin-Ono equation for a class of bounded initial data including periodic and bore-like functions. As a consequence, we obtain local well-posedness in $H^s(\mathbb{R})+H^{\sigma }(\mathbb{T})$ for $s>\frac{1}{2}$ and $\sigma >\frac{7}{2}$. These results follow by studying a generalized forced Benjamin-Ono equation.