Effects of a solid surface on jet formation around neutron stars
  We present two numerical simulations of an accretion flow from a rotating torus onto a compact object with and without a solid surface -- representing a neutron star and a black hole -- and investigate its influence on the process of jet formation. We report the emergence of an additional ejection component, launched by thermal pressure inside a boundary layer (BL) around the neutron star and examine its structure. Finally, we suggest improvements for future models. 
Matthias Stute (1), Jose Gracia (2), Max Camenzind (1) ((1)   Landessternwarte Heidelberg, Germany (2) Section of Astrophysi...