Table 2
Phenomenology of spiral arms, occurrence of free-fall regions, free-fall region evacuation, repeated analysis along the same initial streamline family as for run C1.
| Run + label | Spiral arm shape | Free-fall onto CPD? | FFR evacuated? | Tpre | Tpost | Ptot,pre∕Pstat, post |
|---|---|---|---|---|---|---|
| C1 “nominal” | Concave | Yes | Yes | 30 | 90 | >2 |
| C2 “belllin” | Concave | Yes | Yes | 33 | 120 | >2 |
| H1 “high opacity” | Convex | No | No | 70 | 90 | 1 |
| H2 “deep” | Straight | No | No | 105 | 170 | 1 |
Notes. Sample values pre-to-post-shock in order to showcase significant differences. Values are taken above the midplane, to avoid effects of a “foot”-type post-shock region. The pre-shock temperature for the “cold” simulations, C1 and C2 are essentially the disc temperatures. For the hotter simulations H2 and H1, the pre-shock temperatures rise significantly due to radiative precursors.
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