Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994ap%26ss.216..127b&link_type=abstract
Astrophysics and Space Science, vol. 216, no. 1-2, p. 127-128
Astronomy and Astrophysics
Astrophysics
2
Compressible Flow, Gas Dynamics, Interstellar Gas, Inviscid Flow, Magnetohydrodynamic Flow, Molecular Flow, Molecular Gases, Plasma Jets, Stellar Envelopes, Stellar Models, Stellar Winds, Computerized Simulation, Emission Spectra, H Alpha Line, Stellar Spectra
Scientific paper
We present results of a numerical simulation of a stellar jet from a source with supersonic variations in the outflow velocity. The simulation is compared with both analytical predictions and observations. Observations of Stellar Jets (strings of Herbig-Haro objects) show evidence for the existence of time-dependent phenomena. Proper motions, multiple bow shocks, e.g. HH111 (Reipurth et al., 1992) and velocity gradients along the jets (Reipurth, 1991) have been detected. These phenomena have been modeled in terms of a jet from a source with supersonic velocity variations (Raga et. al., 1990), (Kofman & Raga, 1992), which produce pairs of shocks (or 'internal working surfaces') along the body of the jet. In the present work we show the results of a simulation of such a jet.
Biro Susana
Raga Alejandro C.
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