8th HEAD Meeting, 8-11 September, 2004
Session 22 Gamma-ray Bursts
Oral, Friday, September 10, 2004, 9:00-10:30am

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[22.03] Exploring consequences of the MHD collapsar model for GRBs.

D. Proga (JILA, University of Colorado)

We present recent developments in numerical modeling of magnetized flows in the vicinity of a solar mass black hole in the context of the collapsar model of GRBs. We will focus on studying the nature and interaction of four flow components: polar funnel, accretion disk, disk corona, and outflow in a form of a jet or wind or both. Our previous study showed that, within the collapsar model, MHD effects alone are able to launch, accelerate and sustain a strong polar outflow. We also found that the outflow is Poynting flux-dominated. Here we will explore various initial conditions to check how robust are these results and what are their observational consequences.

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Bulletin of the American Astronomical Society, 36 #3
© 2004. The American Astronomical Soceity.