Table 3
Characteristics of the helical jets in the parametric β simulations.
| β | 1 | 0.25 | 0.025 | 0.0025 |
| c S | 0.26 | 0.13 | 0.041 | 0.013 |
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| Etrig/E0 | 43.0 ± 0.05 | 35.3 ± 0.05 | 32.1 ± 0.05 | 30.4 ± 0.05 |
| Ttrig/t0 | 860 ± 5 | 795 ± 5 | 765 ± 5 | 755 ± 5 |
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| ρt/ρ0 | ~1.1 | ~1.2 | ~1.6 | ~2 |
| Tt/T0 | ~1.06 | ~1.2 | ~1.3 | ~1.5 |
| R/L0 | 2.5 ± 0.3 | 2.7 ± 0.3 | 3.0 ± 0.3 | 3.1 ± 0.3 |
| Δt/t0 | 175 ± 50 | 250 ± 50 | 325 ± 50 | 325 ± 50 |
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| ⟨ vz ⟩ /V0 | 0.07 ± 0.02 | 0.07 ± 0.02 | 0.04 ± 0.02 | 0.03 ± 0.02 |
| ⟨ v⊥ ⟩ /V0 | 0.08 ± 0.02 | 0.09 ± 0.02 | 0.07 ± 0.02 | 0.07 ± 0.02 |
| ⟨ vplas ⟩ /V0 | 0.11 ± 0.03 | 0.11 ± 0.03 | 0.08 ± 0.03 | 0.08 ± 0.03 |
| vϕ/V0 | 0.17 ± 0.03 | 0.22 ± 0.03 | 0.25 ± 0.03 | 0.25 ± 0.03 |
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| ω t 0 | 0.032 ± 0.012 | 0.033 ± 0.011 | 0.023 ± 0.009 | 0.022 ± 0.009 |
| h / L 0 | 14 ± 9 | 13 ± 8 | 11 ± 9 | 8 ± 9 |
| ΔN | 0.9 ± 0.6 | 1.3 ± 0.7 | 1.2 ± 0.6 | 1.2 ± 0.7 |
Notes. Sound speed, cS; free magnetic energy, Etrig, at the trigger time, Ttrig; jet duration, Δt; radius, R; threshold density, ρt/ρ0, and temperature, Tt/T0, ratios used to define the jet relative to initial values in the open field; average vertical, ⟨ vz ⟩ /V0, transverse, ⟨ v⊥ ⟩ /V0, and total, ⟨ vplas ⟩ /V0, velocities of the bulk flow measured in the jet; phase speed of the jet, vϕ/V0; derived non-dimensional angular velocity, ωt0, helical pitch, h/L0, and ejected number of turns of twist, ΔN.
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