GRMHD Simulations Of Jet Formation with a Newly-Developed GRMHD Code

Details GRMHD Simulations Of Jet Formation with a Newly-Developed GRMHD Code GRMHD Simulations Of Jet Formation with a Newly-Developed GRMHD Code

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006head....9.0703m&link_type=abstract

American Astronomical Society, HEAD meeting #9, #7.03; Bulletin of the American Astronomical Society, Vol. 38, p.349

Astronomy and Astrophysics

Astronomy

Scientific paper

We have developed a new three-dimensional general relativistic magnetohydrodynamic (GRMHD) code ``RAISHIN'' by using a conservative, high-resolution shock-capturing scheme. The numerical fluxes are calculated using the HLL approximate Riemann solver scheme. The flux-interpolated, constrained transport scheme is used to maintain a divergence-free magnetic field. Various 1-dimensional test problems show significant improvements over our previous GRMHD code. We have performed simulations of jet formation from a geometrically thin accretion disk near both non-rotating and rotating black holes. Similar to previous results (Koide et al. 2000, Nishikawa et al. 2005a) we find magnetically driven jets. It appears that the rotating black hole creates a second, faster, and more collimated inner outflow. Thus, kinematic jet structure could be a sensitive function of the black hole spin parameter.

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