Fig. 3
versus n and k for aggregates consisting of 2 monomers (
). The coloured surface shows the results for TMM and the black grid shows the results for DDA. At λ = 250 μm the optical constants are n = 3.401 and k = 0.199 for astronomical silicate (Draine & Lee 1984), n = 2.857 and k = 0.282 for amorphous carbon (AC1) (Rouleau & Matin 1991) and n = 1.808 and k = 0.0227 for water ice (Warren 1984).
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