A&A 436, 607-613 (2005)
Effects of a solid surface on jet formation around neutron starsM. Stute1, J. Gracia2 and M. Camenzind1
1 Landessternwarte Heidelberg, Königsstuhl, 69117 Heidelberg, Germany
2 Section of Astrophysics, Astronomy & Mechanics, Department of Physics, University of Athens, Panepistimiopolis, 157 84 Zografos, Athens, Greece
(Received 25 November 2004 / Accepted 3 February 2005 )
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.
Key words: ISM: jets and outflows -- magnetohydrodynamics (MHD) -- methods: numerical
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