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2 - Absorption & Scattering

2 - Absorption & Scattering. Interstellar Extinction & Reddening. B,V,I. B,I,K. Reddening by Absorption Thermal (IR-mm) Emission. L. I. I 0. Transmitted wave inside an absorbing slab. Small Particle Approximation:. Albedo, Phase Function. Inhomogeneous Grains.

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2 - Absorption & Scattering

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  1. 2 - Absorption & Scattering

  2. Interstellar Extinction & Reddening B,V,I B,I,K

  3. Reddening by Absorption Thermal (IR-mm) Emission

  4. L I I0

  5. Transmitted wave inside an absorbing slab...

  6. Small Particle Approximation:

  7. Albedo, Phase Function

  8. Inhomogeneous Grains http://www.walter-fendt.de/ph14e/resonance.htm m- matrix i-inclusion Ex: effective medium theories

  9. Nonspherical Grains Dashed line = measurements “CDE” = Continuous Distribution of Ellipsoids

  10. Irregular (i.e. Real) Particles

  11. Discrete Dipole Approximation

  12. Comparison of DDA sphere and different polarizabilities with Mie sphere

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