WhatÕs the nature of wind instabilites and shocks in normal hot stars? Can this (class of) model(s) work?
What role do magnetic fields play in hot stars and their
X-ray emission?
(e.g. do B stars have coronae? How can young hot stars be so hot and bright in
X-rays? How can hot stars with extreme X-ray
properties be understood?)
What is the correct shock physics and radiation hydrodynamics at the
interface between colliding winds? (e.g. how important is radiative braking?
Hydrodynamic instabilities?)