Laboratory Experiments of Stellar Jets from the Perspective of an Observer |
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| Authors: | Patrick Hartigan |
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| Institution: | (1) Department of Physics and Astronomy, Rice University, Houston, Texas, USA |
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| Abstract: | It has been two decades since astronomers first discovered that accretion disks around young stars drive highly collimated
supersonic jets. Thanks to concerted efforts to understand emission line ratios from jets, we know that velocity variations
dominate the heating within these flows, and motions in stellar jets, now observed in real time, are primarily radial. The
fluid dynamics of the cooling zones can be complex, with interacting shocks, clumps, and instabilities that could benefit
from insights into the physics that only experiments can provide. Recent laboratory experiments have reproduced jets with
velocities and Mach numbers similar to those within stellar jets, and the field seems poised to make significant advances
by connecting observations and theories with experiments. This article points out several aspects of stellar jets that might
be clarified by such experiments. |
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| Keywords: | ISM: jets and outflows ISM: kinematics and dynamics shock waves |
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