Protostars and Planets VI, Heidelberg, July 15-20, 2013
Poster 1K059
Emission from MHD Simulations of YSO Jets using AstroBEAR2.0
Hansen, Edward (University of Rochester)
Frank, Adam (University of Rochester)
Hartigan, Pat (Rice University)
Abstract:
These simulations are two-dimensional axisymmetric jets. They are
based on those done by de Colle and Raga [1], The jets are pulsed via a
sinusoidally time-dependent ejection velocity. A complicated structure
of internal shocks and rarefactions is formed by the pulsations. The field
inside these jets is purely toroidal. We have implemented hydrogen and
helium ionization and recombination which enables us to produce and
analyze emission maps of Hα and [S II]. Strong Hα emission typically
marks shock fronts and strong [S II] emission occurs inside cooling
regions behind shocks. Furthermore, an increase in field strength shows
an increase in shock velocities, clump densities, and jet collimation.
Simulations such as these are important to our understanding of
observations of HH objects, and the ultimate goal is to develop a set of
emission line diagnostics to measure magnetic field strength.
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