Simulating protostellar jets simultaneously at launching and observational scales

Details Simulating protostellar jets simultaneously at launching and observational scales Simulating protostellar jets simultaneously at launching and observational scales

2010-12-16

arxiv.org/abs/1012.3723v1

ApJ 728 L11 2011

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

14 pages, 3 figures; Accepted for publication in ApJL

Scientific paper

10.1088/2041-8205/728/1/L11

We present the first 2.5-D MHD simulations of protostellar jets that include both the region in which the jet is launched magnetocentrifugally at scale lengths $<0.1$ AU, and where the propagating jet is observed at scale lengths $>10^3$ AU. These simulations, performed with the new AMR-MHD code AZEuS, reveal interesting relationships between conditions at the disc surface, such as the magnetic field strength, and direct observables such as proper motion, jet rotation, jet radius, and mass flux. By comparing these quantities with observed values, we present direct numerical evidence that the magnetocentrifugal launching mechanism is capable, by itself, of launching realistic protostellar jets.

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