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Table 3.
MHD scaling of YSO jets and novae to laboratory experiments.
| Parameter | YSO jet | Scaled experiment | Novae | Scaled experiment |
|---|---|---|---|---|
| Length scale [R] = cm | 1016 | 0.1 | 6 × 1013 | 0.1 |
| Density [n] = cm−3 | 103 | 5 × 1019 | 109 | 5 × 1019 |
| Pressure [P] = bar | 10−13 | 105 | 8 × 10−8 | 8 × 104 |
| Velocity [v] = km s−1 | 1000 | 700 | 1000 | 1000 |
| Magnetic field [B] = G | 10−4 | 105 | 10−2 | 104 |
| Timescale [t] = s | 108 | 10−9 | 1.2 × 106 | 2 × 10−9 |
| Temperature [T] = eV | 50 | 1000 | 50 | 1000 |
| Localisation parameter δ | 10−3 | 6 × 10−1 | 10−7 | 6 × 10−1 |
| Reynolds number Re | 1010 | 104 | 109 | 104 |
| Peclet number Pe | 108 | ∼1 | 108 | ∼1 |
| Magnetic Reynolds number ReM | 1018 | 103 | 1017 | 103 |
| Euler number Eu | 11 | 8 | 11 | 11 |
| Thermal plasma beta β | 50 | 200 | 104 | 104 |
Notes. The first seven rows are physical (dimensional) parameters, whereas the last six rows are dimensionless parameters. Please refer to the text for further details on the different parameters.
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