Open Access
Table 1.
Summary of the main properties of the SPL and OBB methods ray-tracing methods.
| OBB | SPL | |
|---|---|---|
| Deflection (per plane) | Integration of transverse acceleration | Particles adaptively smoothed and projected |
| onto density planes | ||
| Large scale | Matter outside the lightcone is taken into account | Edge effects due to Fourier transforms |
| Small scale | Uses the multi-scale RAMSES potential | Smoothing reduces small-scale features |
| Cells missing/in excess | Produces small-scale artefacts | Unaffected |
| Matter component | Only for the total matter | Can individually consider DM, stars, and gas |
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