Friday, February 4, 2011 - 11:00am
Jonathan Ramsey (Saint Mary's University Halifax):
"Into the void: Simulating protostellar jets simultaneously at launching and observational scales"
Abstract. Jets and outflows are an integral part of the current star formation paradigm, and are observed any place star formation is ongoing. The importance of these objects lies in their ability to remove angular momentum from matter accreting onto a central mass. While observations resolve these objects on scales of thousands, or even hundreds of AU, the launching and collimating mechanism (which is < 10 AU in size) remains unresolved. Although there have been many studies of the jet launching mechanism, these simulations do not extend to spatial scales easily comparable with observations. In this talk, I will present results of simulations with AZEuS, an adaptive mesh refinement version of ZEUS-3D, which simultaneously model both the small jet launching region and the large observational length scales. I will highlight results which relate conditions at the disc surface to observable properties of protostellar jets, and demonstrate that magnetocentrifugal launching naturally produces realistic protostellar jets.