Pulsations in hot subdwarf stars: recent advances and prospects for testing stellar physics

The evolved, core helium burning, extreme horizontal branch stars (also known as hot sudwarfs) host several classes of pulsators showing either p- or g-modes, or both. They offer particularly favorable conditions for probing with asteroseismology their internal structure, thus constituting arguably the most interesting seismic window for this intermediate stage of stellar evolution. G-modes in particular have the power to probe deep inside these stars, down to the convective He-burning core boundary where uncertain physics (convection, overshooting, semi-convection) is at work. Space data obtained with CoRoT and Kepler are offering us the possibility to probe these regions in detail and possibly shed new light on how these processes shape the core structure. In this review, I will present the most recent advances that have taken place in this field and I will provide hints of the foreseen future achievements of hot subdwarf asteroseismology.